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Mechanizacija učeta v SSSR
Zak, D. K., (1960)
Editing and coding manual
(1976)
The Development of punch card tabulation in the Bureau of the Census, 1890-1940 : Truesdell, Leon E[dgar] ; Truesdell, Leon E. ; With outlines of actual tabulation programs. U.S. Department of Commerce, Bureau of the Census
Truesdell, Leon Edgar, (1965)