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1by Iowa Ornithologists' Union; Rosene, Walter, 1880-1941Contributors: “...Walker, Bob...”
Published 1941
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2by Iowa Ornithologists' Union; Rosene, Walter, 1880-1941Contributors: “...Walker, Bob...”
Published 1934
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3by Iowa Ornithologists' Union; Rosene, Walter, 1880-1941Contributors: “...Walker, Bob...”
Published 1931
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4by Iowa Ornithologists' Union; Rosene, Walter, 1880-1941Contributors: “...Walker, Bob...”
Published 1933
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5by Iowa Ornithologists' Union; Rosene, Walter, 1880-1941Contributors: “...Walker, Bob...”
Published 1936
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