Programmed topics in statics and strength of materials / Helen Lester Plants, Russell Rex Haynes. Plants, Helen Lester. Haynes, Russell Rex, jt. aut. Statics Problems, exercises, etc. Strength of materials Problems, exercises, etc. TA350.7 .P55 531 19 PLP New York : McGraw-Hill, c1966. c1966. 1966 Text xii, 178 p. : eng