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Atlas of the breeding birds of Maryland and the District of Columbia / Chandler S. Robbins, senior editor ; Eirik A.T. Blom, project coordinator

"A project of the Maryland Ornithological Society and the Maryland Department of Natural Resources." Maps on lining papers. BIRD copy 39088009720095 has bookplate: Smithsonian Institution Libraries, ...
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2nd atlas of the breeding birds of Maryland and the District of Columbia / edited by Walter G. Ellison ; foreword by Chandler S. Robbins

First atlas published as: Atlas of the breeding birds of Maryland and the District of Columbia / Chandler S. Robbins, senior editor ; Eirik A.T. Blom, project coordinator. Pittsburgh : University of ...