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| | Third Ten Year Index to the Condor Volumes XXI-XXX 1919-1928 |
 | | Sumner', E. L., Jr., with Cobb, J. Van Rossem, A. Van Rossem, A. J., with Bowles, J. Wales, J. Welch, L. Woods, R. Wyman, L. Mader'a County: Grinnell, W. Van Rossem, A. Ma.rin County: Blake, S. Booth, E. Grinnell, J., XXX, 188. |
 | | Rowley, J. Sumner, E. L., Jr., with Cobb, J. Swarth, H. Van Rossem, A. Wall, E., XXI, 207, 238. |
 | | Cory, Charles Barney, with Hellmayr, C. E.: XXVII, rev. of part 3 of their "catalogue of birds of the Americas," 126. |
| elibrary.unm.edu /sora/Condor/cooper/SGML/pca_020/pca_020.html (12046 words) |
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