000 00322 a2200145 4500
082 _a636.40222
_bGWI
090 _c22739
_d36059
100 _aGwin, Max
245 _aPig trough
260 _aIllinois
_bWatt Publishing
_c1993
_g1993
300 _a44p.
_c14cm
650 _aSwine
650 _aAnimal husbandry
942 _cL
999 _c50072
_d50072