Some books I recommend on Photography

 

Adams, Ansel The Camera (Ansel Adams Photography, Book 1)  
Adams, Ansel The Negative (Ansel Adams Photography, Book 2)  
Adams, Ansel Examples: The Making of 40 Photographs
Angel, Heather Book of Nature Photography
Shaw, John John Shaw's Landscape Photography  
Shaw, John John Shaw's Nature Photography Field Guide  
     
Schaefer,John P. excellent discussion of Ansel Adam's Zone system of exposure