USAEC, P. O. BOX 62, OAK RIDGE, TENNESSEE 37830

Complete sets of the series are available to school and public

librarians, and to teachers who can make them available for reference or

for use by groups. Requests should be made on school or library

letterheads and indicate the proposed use.

Students and teachers who need other material on specific aspects of

nuclear science, or references to other reading material, may also write

to the Oak Ridge address. Requests should state the topic of interest

exactly, and the use intended.

In all requests, include “Zip Code” in return address.

Printed in the United States of America

USAEC Division of Technical Information Extension, Oak Ridge, Tennessee

Lasers · 第 25 / 26 题