000 00266nam a2200121Ia 4500
020 _a0070280371
100 _aRobert Heller etc.
245 _aChallenges to Science: Earth Science
250 _a2nd
260 _c1979
_bMGH
_aNew York
300 _axi+468
942 _cBK
999 _c8080
_d8080