Quisumbing, Eduardo The Complete writings of Dr. Eduardo A. Quisumbing on Philippine orchids / edited and with an introduction by Helen L. Valmayor. - Pasig : Eugenio Lopez Foundation, c1981. - 2 v. : ill. (some col.) ; 24 cm. Includes index. Subjects--Topical Terms: Orchids -- Philippines. LC Class. No.: QK495.064 / .Q57 1981