Lenert, Louis H. creator Columbus, Ohio Merrill [1971] x, 656 p.: illus. (part col.) 26 cm. Algebraic concepts (Page-1), Radicals,logarithms,and the slide rule (Page-81), Algebraic functions (Page-149), Systems of equations (Page-243), Trigonometry (Page-333), Transcendental functions and operations (Page-421), Analytical geometry (Page-481), Vector operations (Page-545), Appendices (Page-589). Louis H. Lenert. Engineering mathematics 519,LEN 0675092604 77136628 20221122122900.0