00518nam a2200157 a 450000500170000000800410001704000240005810000230008224500610010525000160016626000370018230000370021950000200025665000590027670000250033520231107082014.0090330s19uu    xx            00    eng d  6HSLRCaHSLRCcHSLRC10aCollette, Alfred T10aScience instruction in the middle and secondary schools   a2nd edition0 aColumbus :bMerrill Pub,cc1989.  aviii, 471 pages. : illustrations  aIncludes index.  aSciencexStudy and teaching (Secondary)xUnited States1 aChiappetta, Eugene L