000 00320nam a2200109Ia 4500
008 140122s9999 xx 000 0 und d
082 _a551 Yablonskay
100 _aYablonskaya E A
245 _aEffect of water management on the biological productivity of the azov and caspian seas
260 _b
_c1979
942 _cBK
_2ddc
999 _c3906
_d3906