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Zeitschrift für wissenschaftliche Insektenbiologie (s.n, 1913)

Zeitschrift für wissenschaftliche Insektenbiologie (s.n, 1914)

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The Zoological record - Zoological Society of London. (J.V. Voorst, 1909)

The Zoological record - Zoological Society of London. (J.V. Voorst, 1910)

The Zoological record - Zoological Society of London. (J.V. Voorst, 1911)

The Zoological record - Zoological Society of London. (J.V. Voorst, 1912)

The Zoological record - Zoological Society of London. (J.V. Voorst, 1913)

The Zoological record - Zoological Society of London. (J.V. Voorst, 1914)

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The Zoological record - Zoological Society of London. (J.V. Voorst, 1918)

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The Zoological record - Zoological Society of London. (J.V. Voorst, 1920)

The Zoological record - Zoological Society of London. (J.V. Voorst, 1921)