Lenk, John D. Manual for operational amplifier users / John D. Lenk. - Reston, Va. : Reston Pub. Co., c1976. - xii, 292 p. : ill. ; 24 cm. ISBN: 087909477X Subjects--Index Terms: Operational amplifiers--Handbooks, manuals, etc. Dewey Class. No.: 621.3815/35 / LEN