00310nam a2200109Ia 4500008004000000082001300040100001600053245004500069260003400114300001000148650004200158210210b1977   xxu||||| |||| 00| 0 eng d  a503 MCGR  aMcGRAW-HILL  aYear book of science and technology.1977  aLondonbMcGraw Hill Co.c1977  ax,453  aYear Book 1977 Science and Technology