Authors:
Martinez, M
Escobar, M
Esteves, I
Lopez, C
Galarraga, F
Gonzalez, R
Citation: M. Martinez et al., Trace elements of Paleocene Tachira coals, southwestern Venezuela: a geochemical study, J S AM EART, 14(4), 2001, pp. 387-399
Citation: R. Fernandez et F. Galarraga, Lead concentration and composition of organic compounds in settled particles in road tunnels from the Caracas Valley-Venezuela, ENV GEOCH H, 23(1), 2001, pp. 17-25