Bahr, A. H. (1981). Book theft and library security systems. 1981 - 1982. Knowledge Industry Publications.
Citace podle Chicago (17th ed.)Bahr, Alice Harrison. Book Theft and Library Security Systems. 1981 - 1982. White Plains: Knowledge Industry Publications, 1981.
Citace podle MLA (9th ed.)Bahr, Alice Harrison. Book Theft and Library Security Systems. 1981 - 1982. Knowledge Industry Publications, 1981.
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