References: Sources of Terms
Acton, D.F. and Gregorich, L.J. (Eds.). 1995. The Health of Our Soils – Toward Sustainable Agriculture in Canada. Centre for Land and Biological Resources Research, Research Branch, Agriculture and AgriFood Canada, Ottawa. Allaby, M. (Ed.). 1998. Oxford Dictionary of Plant Sciences. Oxford University Press, Oxford, U.K. American Association for Testing and Materials. 1999. Annual Book of ASTM Standards. Section 4. Construction. Volume 04.08. Soil and rock (I): D420 – D4914. American Society for Testing and Materials, West Conshohocken, PA. Bailey, A.W. 1987.