289 pages - illustrated with photos - clues to the ways of the ancient knowledge are found in the ruins of twelve civilizations

Citadels of Mystery

Religion & Spirituality

De Camp, Catherine Crook

De Camp, L. Sprague

Occult & Paranormal

Ballantine Books

Nov. 1979 Dell Fantasy mass market paperback, Fletcher Pratt (The Onslaught from Rigel), L. Sprague de Camp (Lest Darkness Fall & Related Stories). The Mathematics of Magic was probably the greatest discovery of the ages - at least Professor Harold Shea thought so. With the proper equations, he could instantly transport himself back in time to all the wondrous lands of ancient legend. But slips in time were a hazard, and Shea's magic did not always work - at least, not quite as he expected .- Amazon

Wall of Serpents

Science Fiction & Fantasy

Science Fiction

Dell Publishing Co. Inc.

Assists parents in helping their youngsters and adolescents learn the value of money and become competent in making financial decisions

Teach Your Child to Manage Money

Business & Money

Personal Finance

Book World Promotions

Teach your child to manage money (U.S. news & world report money management library)

Children's Books

Distributed by Simon and Schuster

Stated First edition, one of 1500 copies. Fine in fine dust jacket.

Footprints on Sand: A Literary Sampler

Literature & Fiction

History & Criticism

Advent Pub Inc

Book by De Camp, L. Sprague, De Camp, Catherine Crook

The Bones of Zora

Science & Math

Experiments, Instruments & Measurement

Phantasia Pr

Time and Chance: An Autobiography

Donald m Grant Pub Inc

Footprints on Sand

Independently published

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Books by De Camp, Catherine Crook