J. de Figueirêdo

Beneficiation of Kaolins by Hydrocycloning

H. C. Ferreira, G. Neves, L. Santana, 2016 .

Purified Smectite Clays Organofilized with Ionic Surfactant for Use in Oil-Based Drilling Fluids

H. C. Ferreira, G. Neves, J. M. Cartaxo, 2014 .

Influence of Hydrocycloning Pressure on the Purification of Bentonite

H. C. Ferreira, G. Neves, J. M. Cartaxo, 2014 .

Purification of Bentonite Clays from the District of Cubati, PB, for Obtainment of Organoclays for Use in Drilling Fluids

H. S. Ferreira, H. C. Ferreira, G. Neves, 2012 .

Ayurvedic medicine in Goa according to European sources in the sixteenth and seventeenth centuries.

J. de Figueirêdo, 1984, Bulletin of the history of medicine.