00330nam a2200145Ia 4500008004000000041000800040082001100048100001500059245003300074260003200107650001200139650001500151650000700166650001100173210210b1954   xxu||||| |||| 00| 0 eng d  aeng  a560/18  aWALKER (M)  aNature of scientific thought  aNew DelhibM Sundaramc1954  athought  ascientific  aof  aNature