00447nam a2200133 4500 9365 9365 Fil. 500 P281 1974 Pascual, Elena 21372 General science for the changing world : for first year / by Elena Pascual [and] Adela S. de Leon. Manila : Philippine Book Company, c1974. 191 p. : some ill. ; 26 cm. General Science. 21373 de Leon, Adela S. 21374 BK 1 0 0 0 FIL HS-IMC HS-IMC FIL 0000-00-00 Purchased Fil. 500 P281 1974 02292 2019-08-15 FIL 0 0 0 0 FIL HS-IMC HS-IMC FIL 0000-00-00 Purchased Fil. 500 P281 1974 02294 2019-08-15 00:00:00 2019-08-15 FIL