Hospital morbidity in the Paraíba Valley, 1975

Surface potential decay in samples containing finite density of deep traps charged...

Influence of intake of different levels of phosphorus on the disappearance of 32P...

Analysis of intervarietal crosses in maize (Zea mays L.) in the partial diallel cross...

Effects of news substances for controlling leaf-cutting ants atta spp (Hymenopt...

Dissolution of three rock-phosphates in soil by the sulfur oxidation microbiologic...

Extraction of soluble, organic and total phosphorus in soils of the São Paulo State,...

Mineralogic and granulometric studies of a psamment soil occurring in the Lobo Creek...

Genetic parameters of the maize (Zea mays, L.) populations, Piranão VD-2 and Piranão...

Hygiene and safety at sewage treatment plants