00609nam a2200169Ia 450000500170000000800410001704100080005808200150006610000270008124500820010826000380019030000090022865000300023770000230026799900190029095201300030920250729165340.0250729s2004    xx            000 0 und d  aeng  a371.4 RAOC  aSrivastava A K9221501  aA Hand Book for Teachers : Research in Technology of scology and enviournment  aNew DelhibA P H Publishingc2004  a400p  aVocation Guidence9221502  aRanjan R K9221503  c235041d235041  00104070aALbALd2025-07-29eSita Book Houseg240.00l0o371.4 RAOCpBED00360r2025-07-29 16:53:40v240.00w2025-07-29yBK