Leano, L. P. (1977). List of patentees to whom patents were issued by the Philippines Patent Office during the period 1962-1966 with a subject index to patents [microform]. Photoduplication Service, University of the Philippines Library.
Chicago Style (17th ed.) CitationLeano, Lilia Pasion. List of Patentees to Whom Patents Were Issued by the Philippines Patent Office During the Period 1962-1966 with a Subject Index to Patents [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
MLA (9th ed.) CitationLeano, Lilia Pasion. List of Patentees to Whom Patents Were Issued by the Philippines Patent Office During the Period 1962-1966 with a Subject Index to Patents [microform]. Photoduplication Service, University of the Philippines Library, 1977.