000 00278nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a523.2 R989
100 _aRYAN,P
245 0 _aSOLAR SYSTEMS
260 _aLONDON
_bPENGUIN BOOKS
_c1978
300 _a30X21
942 _cBK
_2DDC
999 _c17721
_d17721