1. Choice and development of catalysts in industrial chemistry;Hoog;Chemistry & Industry,1951
2. A tentative method for the determination of the base exchange capacity of small samples of clay minerals.;Olphen;Clay Minerals Bull.,1951
3. Structural factors governing the reactivities of x-methylenic groups towards active free radicals;Kooyman;Faraday Society Discussion,1951
4. Technology and Society.;Forbes;Impact,1951
5. A theoretical approach of the colloid-chemical stability of dispersions in hydrocarbons.;Mackor;J. Colloid Sci.,1951