000 00252 a2200121 4500
080 _a631.1(062.1)
_bP 963
245 1 _aProceedings
260 _aLondon
_c1950
650 _aAgricultural Economists
100 _a
_d
300 _a372 p.
901 _a31179
999 _c42650
_d42650