Guptta, B. L. Drav engineery aevam‌ drav chalit machine / B. L. Guptta - 6th ed. - New Delhi : Standard Publishers Distributors, 2005. - 800 p. : ill. ; 21 cm. ISBN: 8180140768 Subjects--Topical Terms: 1. Mechanical Engineering Dewey Class. No.: 621.51 / GUP/D