192
THE NEW ZEALAND GAZETTE
No. 6

THE EFFECTS OF RACE AND SOCIO-ECONOMIC STATUS ON JUVENILE OFFENDING STATISTICS
31 p. 1975. $1
This report examines the extent to which the difference in European and non-European offending rates reflects variations in the socio-economic distributions of the two populations. The results indicate that, while a substantial proportion of the difference in offending rates for the two racial groups can be attributed to socio-economic factors, the larger part of this difference cannot be accounted for in this way. Both the theoretical and the practical implications of this finding are discussed. (Research Unit, Joint Committee on Young Offenders.)

EFFECTIVE DISCUSSION
52 p. 60c
Although originally written for staff training purposes in the Public Service, this booklet became popular with outside organisations as a guide to the conduct of meetings. It describes planning and organising both large and small group discussions and contains many useful hints which will help the discussion leader to get the best out of his group, whether he is an old hand or a novice at leading discussion. Also included are lists of books for further reading and recommended films. (State Services Commission.)

ELECTRICAL THEORY AND PRACTICE
NEW ZEALAND TECHNICAL CORRESPONDENCE INSTITUTE 1977
260 p. 1977. Over 350 illustrations. $14
Another first-class text produced by the Technical Correspondence Institute. This textbook covers trade science, materials, appliances, instruments, installation methods, and electrical wiring regulations which are concisely treated in a clear and simple manner.

Covers the syllabus for the electrical registration examinations, the International System of Units, S.I., has been used throughout.

Essential for students and will be popular with others working in the electrical trade or concerned with the technical education of electrical tradesmen.

EGMONT NATIONAL PARK
National Park Handbook
85 p. Illustrated, with maps. 1976. Third edition. $2
This handbook seeks to heighten the enjoyment of visitors to the park by providing a greater knowledge and appreciation of the wealth of natural resources, scenic grandeur, and distinctive vegetation, found in this park.

New chapters include mountaineering, skiing, high climbing, ornithology, climatology and Maori history.

ELECTRICITY FOR MOTOR MECHANICS
(Third Edition S.I. Units)
N.Z. TECHNICAL CORRESPONDENCE INSTITUTE 1977
256 p. $7
This publication is primarily designed as a textbook for apprentice motor mechanics. The basic principles of electricity are described in the first chapter of the book. Each succeeding chapter elaborates the application of these principles to the various electrical systems of the motor vehicles.

For the car owner, boat owner, and other operators of motor engines, this book provides a reliable guide to the location and remedy for minor electrical faults and enables him to recognise at once more serious faults which require specialist attention.

This book deserves a place on every car owner's bookshelf.

ENERGY AND THE ENVIRONMENT
Edited by D. M. Adcock
156 p. 1974. $4.50
This book is intended as a valuable summary of energy technology and its associated problems. The authors discuss different aspects of the economic, social and environmental consequences of unrestrained growth in electricity and total energy consumption. Power construction schemes are likely to have considerable environmental impact at a time of increasing awareness of the need for environmental conservation. Series No, 19. (N.Z. Institute of Public Administration.)

ENGINEERING PUBLICATIONS
Now available through Government bookshops are the following engineering publications that will be of interest to all civil engineers and those associated with engineering. These publications, prepared by the Civil Engineering Division of the Ministry of Works and Development, supply such information as: stress, load bearing, design, and examples of the various equations.

ASSESSMENT OF POSTING WEIGHT LIMITS FOR HIGHWAY BRIDGES
(CDP 704/B) November 1974 $1.60
13 p.

BRIDGE CLASSIFICATION AND DECK GRADING FOR OVERWEIGHT PERMITS
Issue (A) June 1973 $2.50
40 p.

DESIGN TABLES
(CDP 802/B) October 1974 $1.40
8 p.

DUCTILITY OF BRIDGES WITH REINFORCED CONCRETE PIERS
(CDP 810/A) April 1975 $7
109 p.

RETAINING WALL DESIGN NOTES
(CDP 702/C) 1973 $4.75
88 p.

EUTROPHICATION OF LAKE ROTORUA
By E. White, DSIR Information Series No. 123, 1977
16 p. 80c
Discusses the effects of different types of land and water use on the lake, and past and current research associated with the lake. Recommends methods of restoration and necessary future research. This bulletin from the Freshwater Section of the Ecology Division of the D.S.I.R., provides an overall picture of eutrophication in Lake Rotorua.

EVALUATION OF THE NEW ZEALAND COMPULSORY SEAT BELT LEGISLATION
TRANSPORT REPORT No. 17
1976. $1
This is one in a series of reports which present the results of investigations conducted by, or for, the Ministry of Transport.

The reports are intended to provide information of interest both to others carrying out similar research and to those whose interest is the practical application of research findings. (Ministry of Transport.)

EX-NUPTIAL CHILDREN AND THEIR PARENTS
RESEARCH MONOGRAPH No. 2
473 p. 1976. $9.75
This report was intended to provide basic data which up till now has been lacking. The survey gives fundamental demographic information on the characteristics of illegitimate children and their parents and examines in detail the placement of illegitimate children in New Zealand. The publication also aims to place information about the incidence of illegitimacy in New Zealand within an international context. Of particular interest to sociologists, economists, researchers and social workers. (Social Welfare Department.)

The first monograph of this series, entitled Child Abuse in New Zealand is also available from the Government Printer.
Price $4.50