Zone System. The New Zone System Manual. Second Revision by Minor White, Richard Zakia, and Peter Lorenz.

Morgan & Morgan, Sixth Printing, July 1984.  Wraps, 140 pages, near fine with slight evidence of shelf wear on covers, internally free of defects. Covers Visualization, Calibration, Sensitometry, and related topics to bring photographic processes under control.  A copy in better condition than usually found, almost like new.