Periodical :: Horizonte Minero N°135 :: In PDF

2020 Nuevos horizontes para la mineria 

Download: 
http://www.filedwon.info/t9x86octotzz/Horizonte_Minero_N%C2%B0135.pdf.html

Source:  https://hellomining2.blogspot.com/2019/12/perodical-horizonte-minero-n135-in-pdf.html