Programmed Trigonometry: an Introduction to the Tangent, Sine & Cosine Rati Os,

by A.M. Crawford

Paperback

Published January 1, 1968

About the author

A.M. Crawford is a writer and journalist. Having spent many years penning articles for the British political journal Parliamentary Brief and trying to make sense of government policy - often more myth than fact - she, understandably, now devotes her time to writing fiction.