00421nam a22001457a 4500008004100000040005500041080002000096100002200116245003900138260004600177300001400223650001600237653001100253653001100264230510b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a77.02.001.5bJ4  aMees, C E Kenneth  aTheory of the photographic process  aNew York: bThe Macmillan Company, c1954  ax, 1133p.  aPhotography  aX rays  aSilver