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Jim Rising
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Sparrows of the United States and Canada
David Beadle, Jim Rising, James Rising · Academic
320 sayfa · 2001
Identification / Sparrows / Birds in art / Birds, canada / Birds, united states
Geographic variation in size and shape of Savannah Sparrows (Passerculus sandwichensis)
Jim Rising · Cooper Ornithological Society
65 sayfa · 2001
Geographical distribution / Savannah sparrow / Size / Variation