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 report optical aerosol concentration-meter... : The relation between floating dropdiameter to dropspot diameter / L.A. Clarenburg Organophosphorus compounds : Derivation of the molecular rotation ... / H.L. Boter / RVO/TNO. Chemisch Laboratorium Physisch Laboratorium TNO, 1927 - 1977 / [samengest. door J.L. van Soest] report optical aerosol concentration-meter... : A sensitive light transmission meter / L.A. Clarenburg Optical aerosol concentration-meter with an iso-kinetic sampler / L.A. Clarenburg en L.H. Princen ; uitg. RVO/TNO Chemisch Laboratorium Semi automatic determination of numbers of particles... / L.A. Clarenburg en C.J.P. van Buijtenen ; uitg. RVO/TNO Chemisch Laboratorium apparatus for the automatic determination of the penetration time / F.H. Meppelder ; uitg. R.V.O./T.N.O. 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