Bilaketaren emaitzak - "Bibliography."
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Bibliographic index : a cumulative bibliography of bibliographies. [v.] 1- 1937/42.
Argitaratua 1938Liburua -
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Bibliographies, subject and national a guide to their contents, arrangement and use
Argitaratua 1962Liburua -
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Bibliographies, subject and national a guide to their contents, arrangement and use
Argitaratua 1968Liburua -
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