Results 141 to 150 of about 34,016 (182)

Sustitución de la aleación Sn/Pb por una aleación libre de plomo en fabricación de circuito impreso [PDF]

open access: yes, 2010
Baró, M. D.   +2 more
core  

Niveles de plomo y cadmio en sangre de estudiantes de la Universidad Nacional de Tumbes, residentes en Corrales - Perú, 2018

open access: yes, 2019
ABSTRACT Humans through time, we have been using various materials in order to achieve "progress" in civilizations, without realizing that the activities carried out have produced pollutants that have put health and even life at risk; This descriptive research work has been carried out in order to determine the levels of lead and cadmium in the blood ...
openaire   +1 more source

El Eco de París: Revista Médica Cubana [PDF]

open access: yes, 1986
Vallribera i Puig, Pere
core  

La muerte del ñeque [PDF]

open access: yes, 2003
Triana, José
core  

October 5th 1994 [PDF]

open access: yes, 1994
Hispanic News
core  

6. Imago mundi [PDF]

open access: yes, 2016
Casino, Gonzalo
core  

Home - About - Disclaimer - Privacy