Mercer, S. P. Farm and garden seeds / S. P. Mercer and A. W. Monro. - 2nd ed. - London : Crosby Lockwood & Son, 1948. - xii, 156 p. : ill. ; 22 cm. - Agricultural and horticultural series ; . Includes index. 337 337 Subjects--Topical Terms: Seed industry and trade. Dewey Class. No.: 631.52 / M535f