Seaboard Publishing

year of pub­li­ca­ti­onISBNauthor(s)title
1992978-0-9695025-0-0Harold M. MerklingerThe Ins and Outs of Focus
  ''978-0-9695025-1-7The Ins and Outs of Focus
1993978-0-9695025-2-4Harold M. MerklingerFocusing the View Camera: A Scientific Way to Focus the View Camera and Estimate Depth of Field