000			00341nam a2200157Ia 4500
008			131111s9999 xx 000 0 und d
100			_aSiddiqi,Najma
245			_aSelf-learning in biology
250			_a1st.ed.
260			_aNew Delhi
260			_bAsha
260			_c1991
300			_a167p.
650			_aEducation
763			_a16343
999			_c46905 _d46905