000 00305nam a2200109Ia 4500
008 190428s9999||||xx |||||||||||||| ||und||
020 _a0-335-02034-8
100 _aAnon
_915348
245 _aThe earth: it's shape, internal structure and composition
250 _b1975. 45
260 _bOpen university. Keynes
999 _c15219
_d15219