000 00295nam a2200121Ia 4500
008 170101s1977 xx 000 0 und d
082 _a551.1 SPE
100 _aSpencer Edgar W.
245 0 _aIntroduction to the Structure of the Earth
260 _c1977
300 _a640 p.
942 _2ddc
_cB
999 _c733416
_d733416