Catalog of copyright entries, 3d series, v.27. pt.1. Books and pamphlets, including serials and contributions to periodicals, no.1, Jan.-June 1973: sec.1. Current registrations A-L. ix+[1]+975 p. 4°, sec.2. Current registrations M-Z; Renewal registrations. [1]+977-1833 p. 4°, sec.3. Title index. [1]+1835-2424 p. 4° 1975.

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