000 00277nam a2200097Ia 4500
008 151015s9999 xx 000 0 und d
020 _a9251025916
245 _aTropography for freshwater fish culture
_bsimple method for aquaticulture
300 _a269 1989p.
942 _cFAO
_2udc
999 _c24882
_d24882