000 00368nam a2200097Ia 4500
008 140227s9999 xx 000 0 und d
245 _aFAO Training Series . Simple Methods for Aquaculture - Topography for Freshwater Fish Culture Topographical Surveys
260 _bFood and Agriculture Organization of the United Nations
_aRome
_c1989
300 _a265p.
942 _2udc
_cTR
999 _c5864
_d5864