00335nam a2200109Ia 4500008004100000040001700041041001200058082001500070100001800085245011100103300001100214230917s9999||||xx |||||||||||||| ||und||  e156840aMAIN  aEnglish  a372.3 B73E  aBrahm Prakash 0aFactorial study of abilities involved in learning different aspects of chemistry at senior secondary stage  a488 p.