Protease extraction from soil by sodium pyrophosphate and chemical characterization of the extracts

The biplot graphic display of matrices with application to principal component analysis

K. R. Gabriel · Biometrika · 1971 · 2.9K citations

Computing, Visualization, Data Visualization +13

Soil Map of the World

Soil Survey Horizons · 1962 · 1.7K citations

Agriculture, Earth Sciences, Soil Sciences +12

Short-term assays of soil proteolytic enzyme activities using proteins and dipeptide derivatives as substrates

J.N. Ladd, J.H.A. Butler · Soil Biology and Biochemistry · 1972 · 1.1K citations

Life Sciences, Biochemistry, Soil Sciences +16

Enzyme activity in soil: Location and a possible role in microbial ecology

R. G. Burns · Soil Biology and Biochemistry · 1982 · 1K citations

Agriculture, Microbiology, Soil Sciences +16

Humic Substances in the Global Environment and Implications on Human Health

Warren A. Dick · Journal of Environmental Quality · 1995 · 686 citations · Full text

Natural Sciences, Environmental Sciences, Toxicology +16