ORVILLE D. MACHINESHOP: OPERATIONS AND SETUPS - 4TH - CHICAGO AMERICAN TECHNICAL 1973 - 582 IX 1 1 0 0 ISBN: 0-8269-1842-5 Source: 79-30 Subjects--Personal Names: CLYDE A. NELSON HAROLD W. PORTER Subjects--Topical Terms: TECHNOLOGY(APPLIED SCIENCES) LC Class. No.: TJ 1125.L33