San Pedro, Rizalina P. <br/><br/>Science :   physical concepts / Rizalina P. San Pedro, Alice F. Enriquez.  - Manila :   Philippine Book,  ©1976.  - 310 pages :  illustrations ;   22 cm. <br/><br/> Bibliography : p. 289-290 Includes index. <br/><br/><label>Subjects--Topical Terms: </label><br/>Science.<br/>Science ----Study and teaching.<br/><br/><label>LC Class. No.: </label>Q181   / .Sa58 1976