1. A Program To Assess and Monitor Soil Quality in Canada: Soil Quality Evaluation Program Summary (Interim);Acton,1993
2. The Health of Our Soils: Toward Sustainable Agriculture in Canada;Acton,1995
3. A conceptual framework for soil quality assessment and monitoring;Acton,1993
4. Significance of fertilization for the post-harvest condition of vegetables, especially spinach;Ahrens,1983
5. The Albrecht Papers;Albrecht,1975