000 00284nam a2200121Ia 4500
008 160710s1973 xx 000 0 und d
082 _a546.4 RAS
100 _aRASTOGI,SUBHASH CHANDRA
245 _aRARE-EARTHS
260 _bPRAGATI PRAKASHAN
_c1973
300 _a66
942 _2ddc
_cB
999 _c35700
_d35700