00309nam a2200097   4500082002300000100002600023245006400049260005300113300002600166650001900192  aFil. 550 S161 19881 aSalandanan, Gloria G.1 aEarth science :blaboratory manual /cGloria G. Salandanan.  aQuezon City :bPhoenix Publishing House,cc1988.  avii, 161 p. ;b28 cm.14aEarth science.