000 00326nam a2200133Ia 4500
008 130223s9999 xx 000 0 und d
245 _aBetter fresh water fish farming
260 _aRome
260 _c1981
300 _a48 p.
440 _aNo. 30; Food and Agriculture Organization
901 _pS36041
942 _cB
_2udc
999 _c116692
_d116692