Elements of agriculture
Warren, G. F.
Elements of agriculture - 8th. ed. - London : Macmillan and Co., 1911. - 434 p. : tela orig.
Don. J. J. Corti
Elements of agriculture - 8th. ed. - London : Macmillan and Co., 1911. - 434 p. : tela orig.
Don. J. J. Corti