Real improvements in agriculture, (on the principles of A. Young, Esq.) : recommended to accompany improvements of rents : in a letter to Reade Peacock, Esq. ... to which is added, a letter to Dr. Hunter, physician in York, concerning the rickets in sheep - Comber, Thomas, -1778 (Making of the modern world (Goldsmiths'-Kress Library of Economic Literature), 1772)