00000nam 2200000 4500 KASEL-06100000012330 20100611142645.0 181108||||||||| | ||| |||| ||ind|| 0-8445-5521-5 0010-061000000012330 500.1 500.1/Ble/e BLECHA, Milo K. Exploring Science United States of America Laidlaw Brothers 1976 144 hlm. : ilus ; 23 cm 0 ILMU PENGETAHUAN ALAM - SAINS - 2 33.042/Hd/5-83