000 00491naa a2200169Ia 4500
008 200107s2013 xx 000 0 und d
020 _a978-971-9968-39-9
082 _bR81s
083 _aR81s
099 _a1697
100 _aRoyston, Angela
_93600
245 1 0 _aSoft and hard=Malambot at matigas.
264 _aQuezon City, Phils.
_bLumina,
_c2013.
300 _a34
500 _aMy world of science=Ang daigdig ng siyensya series. Includes index. Includes glossary.
942 _2ddc
_cBK
999 _c1697
_d1697