@book{bhlitem209249, title = {Raptor research }, volume = {v.15:no.4 (1981)}, copyright = {In copyright. Digitized with the permission of the rights holder.}, url = {https://www.biodiversitylibrary.org/item/209249}, note = {https://www.biodiversitylibrary.org/bibliography/119594}, publisher = {Vermillion, S.D, Raptor Research Foundation, [1972-1986]}, author = {Raptor Research Foundation and Raptor Research Foundation.}, year = {1981}, pages = {37}, keywords = {Birds|Birds of prey|Periodicals|Research}, }