Harwood, J E G books & textbook
Speed and How to Obtain It
Harwood, J E G Clymer, Floyd Velocepress
Veloce Enterprises, Inc. /2016-12-21 Paperback / 196 Pages
isbn-10: 1588501477 / isbn-13: 9781588501479
A Manual of Underwater Photography.
Glover, T.; Lythgoe, J.N.; Harwood, G. E.
London: Academic Press, 1977. /1977T Hardcover / 219 Pages
isbn-10: 0122867505 / isbn-13: 9780122867507
