De Leon, Sonia Y. Preservation of Philippine foods : a manual of principles and procedures / Sonia Y. De Leon and Matilda P. Guzman - Quezon City : Alemar-Phoenix Pub. House, c1982 - viii, 206 p. : ill. Bibliography: p. 206 Subjects--Personal Names: Guzman, Matilda P. Subjects--Topical Terms: Food preservation