00333nam a22001097a 4500008004100000040005500041080001800096100002000114245002900134260004300163650001700206230331b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aD 771.318bH6  aStevenson, A C   aBuild your own enlarger   aLondon: bThe Foundation Press, c1985  aPhotography