Needham, J. G. (1913). Natural History of the Farm: A Guide to the Practical Study of the Sources of Our Living in Wild Nature. The Comstock publishing company.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Needham, James G. Natural History of the Farm: A Guide to the Practical Study of the Sources of Our Living in Wild Nature. Ithaca, N.Y.: The Comstock publishing company, 1913.
MLA -ийн эшлэл (9 дэх хэвлэлт)Needham, James G. Natural History of the Farm: A Guide to the Practical Study of the Sources of Our Living in Wild Nature. The Comstock publishing company, 1913.
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