000 00325nam a2200109 4500
027 _aAgricultural economics study no. ; 44
041 _aeng
080 _a63.003.1(548.7)
_bS7
942 _cRR
110 _aSri Lanka. Department of Agriculture
245 _aCost of cultivation of agricultural crops: Yala 1987 V ol. I - Paddy
999 _c170736
_d170736