(1991). Title 13, United States Code census / prepared by the Committee on Post Office and Civil Service, House of Representatives. [microform].
Tohutoru Kātū Chicago (17th ed.)Title 13, United States Code Census / Prepared by the Committee on Post Office and Civil Service, House of Representatives. [microform]. 1991.
Tohutoro MLA (9th ed.)Title 13, United States Code Census / Prepared by the Committee on Post Office and Civil Service, House of Representatives. [microform]. 1991.
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