00358cam a2200133ua 4500041001000000082001800010100001900028245007400047260006000121300001200181504000500193942000700198999001900205  aengh  a372.3bVES/EL  aVessel, M F  .  aElementary school science teaching / cM F Vessel.hTextual Documents  aNew Delhi : bPrentice Hall of India Pvt Ltd. , c1965.  a119 ; .  a  cBK  c338927d338927