000 00309nam a22001217a 4500
020 _a0-8445-5522-3
082 _a500
_bBLE
100 _aBlecha . Milo K
_aGega . Peter C
_aGreen Muriel
245 _aExpoloring Science Gold Book
260 _aNew York
_bLaidlaw Brothers
_c1976
300 _a192 p.
942 _cL
999 _c17433
_d17433