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1Published 1923Government Document Book
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2Published 1910“...Biological Survey Circ. No. 71...”
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3Published 1910“...Biological Survey Circ. No. 75...”
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4Published 1912“...Biological Survey Circ. No. 86...”
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5Published 1912“...Biological Survey Circ. No. 89...”
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6Published 1914“...Biological Survey Service and Regulatory Announcements No. 1...”
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7Published 1916“...Biological Survey Service and Regulatory Announcements No. 3...”
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8Published 1917“...Biological Survey Service and Regulatory Announcements No. 15...”
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9Published 1918“...Biological Survey Service and Regulatory Announcements No. 18...”
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10Published 1918“...Biological Survey Service and Regulatory Announcements No. 22...”
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11Published 1920“...Biological Survey Service and Regulatory Announcements No. 33...”
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12Published 1915“...Biological Survey Service and Regulatory Announcements No. 5...”
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13Published 1924“...Biological Survey Service and Regulatory Announcements No. 61...”
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