00689cam a22002051  4500001001300000003000400013005001700017008004100034010001700075025001900092040001800111050002200129110007900151245006100230260007900291300003100370504003200401650003300433999001700466sa 64008568 DLC20260227112055.0810925s1964    ii a     b    000 0 eng    asa 64008568   aPL480:I-E-3438  aDLCcDLCdDLC00aQ182.3b.N37 19642 aNational Institute of Education (India).bDepartment of Science Education.10aGeneral science handbook of activities, classes VI-VIII.  a[New Delhi]bNational Council of Educational Research and Trainingc[1964]  aiv, 458 p.billus.c28 cm.  aBibliography: p. [435]-441. 0aSciencexLaboratory manuals.  c60927d60927