Cassinia Delaware Valley Ornithological Club contributor text series Philadelphia Delaware Valley Ornithological Club 1901- 1901 Annual
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ENG With issue no. 60, Cassinia adopted the taxonomy and nomenclature of the A.O.U.'s 6th edition of the Check-list of North American birds, 1983. Vols. for <1973-> include Abstracts of proceedings of the Delaware Valley Ornithological Club. Delaware New Jersey Ornithology Pennsylvania Periodicals QL671 .D34 Abstract of the proceedings of the Delaware Valley Ornithological Club of Philadelphia https://www.biodiversitylibrary.org/bibliography/9516 7533588 https://www.biodiversitylibrary.org/bibliography/47004 0095-862X 1553492 sc80001454 MUL