000 00259nam a2200109Ia 4500
008 231212s1981 xx 000 0 und d
041 _aeng
082 _a515.926
100 _aKopylov G.I.
245 _aScience For Every one
260 _aMascow
_bMir Pub
_c1981
999 _c958431
_d958431