Taylor, Norman L. Clover science and technology /ed. by N.L. Taylor - Madison, Wis. : American Society of Agronomy, 1985. - 616 p. : ilus. ; gráfs. - Agronomy ; 25 . - American Society of Agronomy . - Agronomy ; 25 . ISBN: 0891180834 LCCN: 44327 Subjects--Topical Terms: Trébol. Dewey Class. No.: 633.32 / T3