000 00384 a2200145 4500
080 _a636.4
_bG 786 C
245 1 _aCosts and efficiency of pig production
_bA comparison between England and Denmark
260 _aLondon
_c1954
650 _aPig
650 _aPigs
700 _aGreat Britain Ministry of Agriculture and Fisheries
100 _a
_d
300 _a45 p.
901 _a49650
999 _c50769
_d50769