Formerly state-owned company, dissapeared in 1982. Was also called IAME, DINFIA, etc.
The most known vehicle was the Rastrojero.
Next, the trucks:
http://camionargentino.blogspot.com.ar/2013/02/rastrojero-frontal-m-91.html
http://camionargentino.blogspot.com.ar/2013/02/rastrojero-frontal-sm-81.html
http://camionargentino.blogspot.com.ar/2013/02/ratrojero-frontal-f-81.html