Schultes, Richard Evans. Plants and human affairs, laboratory manual - Cambridge, Mass. : Botanical Museum Harvard University, 1960 - 64 p. : ilus. - Biology ; 104 . - Biology ; 104 . LCCN: 56937 Subjects--Topical Terms: Botánica económica--Manuales de laboratorio. Dewey Class. No.: 581.602 / S28