How it works, illustrated > Editions
by Rudolf F. Graf First published 1974
Published January 1st 1974
by Harper & Row
no edition noted, Hardcover, 184 pages
Published January 1st 1976
by BCA
Hardcover, 0 pages
Unknown Binding, 0 pages
Hardcover, 184 pages
Published January 1st 1977
by Sphere
New Ed, Paperback, 192 pages
Published January 1st 1979
by Van Nostrand Reinhold Company
First Edition, Paperback, 184 pages