Notched cards Feature cards (peek-a-boo cards) Punched cards Electronic searching Coding in yes-no from
Author(s)
Bibliographic Information
Notched cards . Feature cards (peek-a-boo cards) . Punched cards . Electronic searching . Coding in yes-no from
(The State of the library art / edited by Ralph R. Shaw, v. 4 ; pt. 1-5)
Graduate School of Library Service, Rutgers, the State University, 1961.
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