000			00369 a2200121 4500
008			141010b1977 xxu||||| |||| 00| 0 eng d
082			_a500
100			_aBobrov, L.
245			_aGrounds for optimism: _btrans. by from the Russian by H. Cammpbell Creighton / _cL. Bobrov
260			_aMoscow : _bMir Publishing, _c1977.
300			_av, p.
650			_aScience Popularisation
999			_c4174 _d4174