General college mathematics : William L. Ayres, Cleota G. Fry and Harold F. S. Jonah. Ayres, W. L. (William Leake) 1905- Fry, Cleota G. (Cleota Gage) 1910- joint author. Jonah, H. F. S. (Harold Francis Secord) 1904- joint author. Mathematics. Mathematics Problems, exercises, etc. QA37.2 .A95 1970 510 AYG New York : McGraw-Hill; 1970. 1970. 1970 Text 421 p. : eng