Sorption of fluoride by hydrous aluminium oxide /

por Helmy, Ahmed K.

Concurrent effects of KC1 and pH on root concentration potentials /

por Helmy, Ahmed K.

Electric potentials of bi-zonal clay film membranes /

por Helmy, Ahmed K.

Flooculation of NH4 -montmorillonite by electrolytes /

por Helmy, Ahmed K.

The aluminium oxide-aqueous interface and the point or zero charge /

por Helmy, Ahmed K.

Calculation of negative and positive adsorption in some clay electrolyte systems /

por Helmy, Ahmed K.

Surface conductance in plugs /

por Helmy, Ahmed K.

Evaluation of the cation exchange constant /

por Helmy, Ahmed K.
Publicado 1971

Calorimetric determination of the point of sero charge /

por Tschapek, Marcos W.

Isotopic exchange of phosphate on some phosphatic compounds /

por González de Bussetti, Silvia E.

Calorimetric determination of the point of zero charge /

por Bussetti, Silvia G. de.
Publicado 1972

Transference numbers of ions from measurements of liquid junction potentials /

por Grazán, A. M.
Publicado 1972

Estudio mineralógico de una montmorillonita de Cerro Bandera (prov. de Neuquén) /

por Peinemann, Norman.
Publicado 1972