ID:DA12341315
Leffingwell, W. H. (William Henry)
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by William Henry Leffingwell and Edwin Marshall Robinson
Published for the United States Armed Forces Institute by McGraw-Hill 1944 War Department education manual EM703
Available at 2 libraries
McGraw-Hill 1943 2nd ed
Available at 8 libraries
edited by William Henry Leffingwell
Published for the National Association of Office Appliance Manufacturers 1926
Available at 6 libraries
by William H. Leffingwell
[s.n.] , printed by Hoosier Press) [1925?]
Available at 1 libraries
edited by W.H. Leffingwell
A.W. Shaw c1918
Available at 10 libraries
