Blacker, W. (1835). An essay on the improvement to be made in the cultivation of small farms: By the introduction of green crops and housefeeding the stock thereon: originally published in an address to the small farmers on the estates of the Earl of Gosford and Colonel Close, in the county of Armagh (Landlords' edition, ..). William Curry, jun., and Co.: Archer, Belfast; M'Watters, Armagh; Rodwell, London. John Hoare, printer, 2, Hawkins's-Street, Dublin.

Blacker, William. An Essay on the Improvement to Be Made in the Cultivation of Small Farms: By the Introduction of Green Crops and Housefeeding the Stock Thereon: Originally Published in an Address to the Small Farmers on the Estates of the Earl of Gosford and Colonel Close, in the County of Armagh. Landlords' edition, .. William Curry, jun., and Co.: Archer, Belfast; M'Watters, Armagh; Rodwell, London. John Hoare, printer, 2, Hawkins's-Street, Dublin, 1835.