The Production and marketing of pigs /
Davidson, M. R.
The Production and marketing of pigs / M. R. Davidson. - 3rd edition. - London : Longmans, Green and Company Limited, c1976. - 516 pages.
The Production and marketing of pigs / M. R. Davidson. - 3rd edition. - London : Longmans, Green and Company Limited, c1976. - 516 pages.