00457cam a2200169 4500 547817294 TxAuBib 20000216120000.0 000216s1979||||||||||||||||||||||||und|u 9780910990684 0910990689 TxAuBib POPULAR MECHANICS. DO-IT-YOURSELF ENCYCLOPEDIA, VOL 7. NEW YORK : POPULAR MECHANICS, 1979. 20000216.