The index includes more than ] 50,000 entries that direct you to informa-

tion in WorldBook. The index, together with World Book s extensive system

of cross-references, its single alphabetical arrangement, and its other ease-

of-use features, helps you find what you want to know quickly and easily.

For general instructions on how to find a fact or an article in WorldBook,

see the section "How to use 14/orldBook"in Volume A. To learn how to use

the index, see page Z of this volume. The index itself begins on page 41.

The more than 200 Reading and Study Guides are designed to help you

carry on independent study. These units include several Topics forstudy

and lists of Books to read and Other sources of information. The Reading

and Study Guides are functionally arranged in alphabetical order through-

out the index portion of this volume. For a list of the Reading and Study

Guides and instructions on how to use them, see the section beginning on

page 4.

The section A Student Guide to Better Writing, Speaking, and Research

Skills begins on page 6. It includes practical advice on such topics as im-

proving your writing skills and preparing a short report, a book review, and

a term paper; preparing, rehearsing, and delivering a speech; and using a li-

brary s resources and tapping other sources of information. Related informa-

tion on conducting research follows on page 37. Included are: a Clossaryof

terms and abbreviations encountered in research; a listing of general and

specific Selected reference books; and information on two systems for ar-

ranging materials in a library--Dewey Decimal Classification and Library of

Congress Classification.

This volume was prepared with the advice of the WorldBook Advisory

Board, other leading educators, practicing teachers, and skilled librarians.