Birthwistle, G M Simula begin / G M Birthwistle, O-J Dahl and B Myhrhaug - Philadelphia : Auerbach, c1973. - 391 p. : ill. ; 23 cm. ISBN: 9144062117 LCCN: Subjects--Topical Terms: Programming (Computers)System analysis LC Class. No.: QA76 / .B61 1973 Dewey Class. No.: 005.1 / B617s