Four Winds Press, 1974, 1st printing; 72 pp. Juvenile hardback ex-lib.
"A general discussion of engines and their history with emphasis on the Wankel rotary engine and its many advantages." An interesting choice by an author of funny magic books for young boys.
CONDITION: Very Good in Very Good Jacket; ex-lib, some marks. very nice, clean, unwrinkled, and straight. Item #7165