SUP/5/1/2/252
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Documento
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1946
Parte de Superintendents
SUP/5/1/2/253
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Documento
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1946
Parte de Superintendents
SUP/5/1/2/257
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Documento
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1946
Parte de Superintendents
SUP/5/1/2/259
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Documento
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1946
Parte de Superintendents
SUP/5/1/2/264
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Documento
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1946
Parte de Superintendents
SUP/5/1/2/265
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Documento
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1946
Parte de Superintendents
SUP/5/1/2/267
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Documento
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1946
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SUP/5/1/2/278
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Documento
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1946
Parte de Superintendents
SUP/5/1/3
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Sub-series
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1947
Parte de Superintendents
SUP/5/1/3/1
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Documento
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1947
Parte de Superintendents
Letter from Antwerp Zoo, with papers on Consideration Upon the Necessity of Coordinating All Observations Taken on Okapis Living in Captivity, and Ways in Exhibiting Birds in Cages