Pfanner, H. F. (1974). Oskar Maria Graf (1894 - 1967): An exhibit at the Dimond Library University of New Hampshire, July 22 - August 22, 1974 / [this catalogue was prepared by Helmut F. Pfanner]. Dimond Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPfanner, Helmut F. Oskar Maria Graf (1894 - 1967): An Exhibit at the Dimond Library University of New Hampshire, July 22 - August 22, 1974 / [this Catalogue Was Prepared by Helmut F. Pfanner]. Durham, NH: Dimond Library, 1974.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPfanner, Helmut F. Oskar Maria Graf (1894 - 1967): An Exhibit at the Dimond Library University of New Hampshire, July 22 - August 22, 1974 / [this Catalogue Was Prepared by Helmut F. Pfanner]. Dimond Library, 1974.
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