1. The influence of adrenochrome on fibroblastic cells in vitro;Gaillard;Proc. Akad. Wetenschappen Amsterdam,1948
2. The influence of microorganisms on the phosphate intake by the plant;Gerretsen;Plant and Soil,1948
3. Cation equilibria in plants in relation to the soil II;van Itallie;Soil Science,1948
4. Importance of molybdenum in the nitrogen metabolism of microorganisms and higher plants;Mulder;Plant and Soil,1948
5. E. L. Ritman F. M. Muller J. G. Dijkhuis Some data on chemical composition of cereal straw. The paper industry and paper world 1948