GUZMÁN, W., Gems S.A. Bogotá, Colombia., Colombia

• Geologica Acta Vol. 12 No. 4 (2014): ALAGO Special Publication: Selected Contributions from the XIII Congress - ALAGO
  Is there a pre-Cretaceous source rock in the Colombia Putumayo Basin? Clues from a study of crude oils by conventional and high resolution geochemical methods
  Abstract  PDF