00000cam a22000004a 4500 UP-99796217604437703 Buklod 20230503092542.0 ta r ||| u ta 010228s1980 xx a r |||| u|eng d (iLib)UPD-00000262430 eng DMLUC Q 127 P5 N37 1980 National Science Development Board and its agencies. [S.l. s.n. National Media Production Center). 1980n] (Manila [17] p. ill. National Science Development Board. Science Philippines. Technology Philippines. Book Fi Paper UPD DMLF Q 127 P5 N37 1980 in stacks Book