THIS book, as the author says, attempts to outline the principles and to indicate how the genetic and environmental concepts are interwoven in the idea of livestock improvement. Much original work is included in the book, especially work on problems of sheep-breeding drawn from personal observations in many different countries.
In Relation to Heredity and Environment. By Dr. J. E. Nichols. Pp. vii + 208 + 7 plates. (Edinburgh and London: Oliver and Boyd, 1944.) 10s. 6d. net.
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HAMMOND, J. Livestock Improvement. Nature 155, 288 (1945). https://doi.org/10.1038/155288a0