Clapp, V. W. (1956). Bibliographical Services throughout the World. First and Second Annual Reports and Third Annual Report. Bull Med Libr Assoc.
Παραπομπή Chicago StyleClapp, Verner W. "Bibliographical Services Throughout the World. First and Second Annual Reports and Third Annual Report." Bull Med Libr Assoc 1956.
Παραπομπή MLAClapp, Verner W. "Bibliographical Services Throughout the World. First and Second Annual Reports and Third Annual Report." Bull Med Libr Assoc 1956.
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