00250nam a22001097a 4500003000400000008004100004082001600045100001900061245003000080260002200110300000800132OSt231219b        |||||||| |||| 00| 0 eng d  a760.3bS78G  aStevenson,G.A.  aGraphic arts encyelopedia  aMcgraw Hillc1968  a492