Effects of lead on the soil bacterial microfloraP. Doelman; L. Haanstra · 1979

Effects of lead on the decomposition of organic matterP. Doelman; L. Haanstra · 1979

The use of sigmoidal dose response curves in soil ecotoxicological researchL. Haanstra; P. Doelman; J. H. Oude Voshaar · 1985

Glutamic acid decomposition as a sensitive measure of heavy metal pollution in soilL. Haanstra; P. Doelman · 1984

Short- and long-term effects of heavy metals on urease activity in soilsP. Doelman; L. Haanstra · 1986

Decomposition of α- and β-hexachlorocyclohexane in soil under field conditions in a temperate climateP. Doelman; L. Haanstra; H. Loonen; A. Vos · 1990

Rate of microbial degradation of high concentrations of α-hexachlorocyclohexane in soil under aerobic and anaerobic conditionsP. Doelman; L. Haanstra; E. de Ruiter; J. Slange · 1985