Cardenas, Elpidio J. Technical drafting I / Elpidio J. Cardenas, Felizardo Y. Francisco. - Metro Manila : National Book Store, c1992. - 125 pages : illustrations ; 22 cm Bibliography : p. 125. ISBN: 9710851101 Subjects--Topical Terms: Drawing--Instructions. LC Class. No.: T369 / C17 1992