A treatise on milch cows :
whereby the quality and quantity of milk which any cow will give may be accurately determined by observing natural marks or external indications alone : the length of time she will continue to give milk, &c. /
by M. Francis Guénon ; translated ... from the French, by N. P. Trist. ; with introductory remarks and observations [p. 9-36] on The cow and the dairy by John S. Skinner.

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