Brood sow and litter
Quaife, E.L.
Brood sow and litter Feeding and management - Ames 1944 - 907-920 p. - Feeding, Management Iowa Agricultural Experiment Station. Bulletin No. P59 .
Brood sow and litter Feeding and management - Ames 1944 - 907-920 p. - Feeding, Management Iowa Agricultural Experiment Station. Bulletin No. P59 .