On the nature and property of soils their connexion with the geological formation on which they rest, the best means of permanently increasing their productiveness, and on the rent and profits of agriculture - Morton, John (J. Ridgway, 1840)
Goldsmiths'-Kress no. 31387.1. - OCLC, 17852554. - Reproduction of original from Goldsmiths' Library, University of London