Ang libangang duplo manga sarisaring paghahanay at paglalabas ng mga pangangatwiran at pagsasanggalan [microform]. - Fernandez, Agripino (Quezon City Photoduplication Service, University of the Philippines Library, 1976)
Microfilmed with 20 other titles.
Originally published by Juan Fajardo, Maynila, 1911.