Reversed phase paper chromatography of p-nitrophenyl methylphosphonates / A. Verweij and H.L. Boter ; uitg. R.V.O./T.N.O. Chemisch Laboratorium Sterospecificity of hydrolytic enzymes in their reaction... ; uitg. R.V.O./T.N.O. Chemisch Laboratorium / H.L. Boter ; A.J.J. Ooms Organophosphorus compounds : Derivation of the molecular rotation ... / H.L. Boter / RVO/TNO. Chemisch Laboratorium preparation of some diethyl substituted phenyl phosphates / P.R. Avis and H.L. Boter ; uitg. R.V.O./T.N.O. Chemisch Laboratorium Syntheses and toxicities of some series of choline-sterase inhibiting agents... / H.L. Boter ; uitg. R.V.O./T.N.O. Chemisch Laboratorium resolution of some O-alkyl hydrogen methylphosphonothioates / H.L. Boter ; uitg. R.V.O./T.N.O. Chemisch Laboratorium