00440nam a2200085   450000500170000008400450001710000170006224501600007926001150023920250912113645.0  2Colon ClassificationaT2:3( E ),950bS:44  aGAYATHRI (S)  aEffectiveness of fishbone diagram based learning of Chemistry in critical thinking, problem solving ability and achievement among secondary school students  aThiruvannathapurambThesis in Education, Govt College of Teacher Education,Thycaud, University of Keralac2024