Espana R. C., Salmorin L. M. e., . (1995). Chemistry. Philippines: AVIBA PUBLISHING HOUSE,INC.
Espana Rebecca C, Salmorin Lolita M et,.al, . 1995. Chemistry. Philippines: AVIBA PUBLISHING HOUSE,INC.
Espana Rebecca C, Salmorin Lolita M et,.al, . Chemistry. Philippines: AVIBA PUBLISHING HOUSE,INC. 1995.