00661nam a2200157Ia 4500008004100000020001800041040001700059082003100076100001800107110005900125245008200184260003000266300000900296440009500305650010300400190328s9999||||xx |||||||||||||| ||und||  a92-3-101374-2  aNITILcNITIL  221sta373.236095493bA832I  aRanaweera,A M  aAsian Centre of Educational Innovation for Development 0aIntegrated science in the junior secondary school in Sri LankacA M Ranaweera  aParisbUNESCO Pressc1976  a31p.  aExperiments and innovation in education:an Internatinal Bureau of education series; no. 27  aEducation,secondary-Sri Lanka; Science-Study and teaching-Sri Lanka; Education-Curricula-Sri Lanka