00341nam a2200145Ia 4500008004000000041000800040082001100048100002300059245002800082260004200110300001000152650001200162650001300174650000800187210210b1947   xxu||||| |||| 00| 0 eng d  aeng  a531/51  aEDDINGTON (Arthur)  aNew pathways in science  aCambridgebThe University Pressc1947  ax,333  ascience  apathways  aNew