00317nam a2200121Ia 4500008004100000040001700041041001200058082001500070100001000085245003000095260005300125300001700178230917s9999||||xx |||||||||||||| ||und||  e139724aMAIN  aEnglish  a509.54 I2M  aIndia 0aMedal lectures: 1950-1983  aNew DelhibIndian National Science Academyc1984  avii, 848p p.