Ornithology

NATURENS VERDEN.

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KOLTHOFF, GUSTAF och L.A. JÄGERSKIÖLD.

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KOLTHOFF, GUSTAV och L.A. JÄGERSKIÖLD.

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GERRITS, H.A.

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KOLTHOFF, GUSTAF och L.A. JÄGERSKIÖLD.

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ROBERTS, AUSTIN.

London, Johannesburg, (1949).

CAVE, FRANCIS O. a. JAMES D. MACDONALD.

Edinburgh, London, 1955.

SMYTHIES, BERTRAM E.

Edinburgh, London, 1960.

SNYDER, L.L.

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BODSWORTH, FRED.

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ROBERTS, (A.).

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ALI, SÁLIM.

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PEARSON, HENRY J.

London, Porter, 1899.

SITWELL, SACHEVERELL, HANDASYDE BUCHANAN and JAMES FISHER.