Descripción: “..., guaranteeing concrete results to the companies. ignore this could be dangerous to the surviving of the company. ...”

Descripción: “... dangerous, allowing the establishment of efficient management strategies material flows from the point...”

Descripción: “... of the wastewater treatment system in Monteria in Colombia. The sludge’s dangerousness (corrosiveness, flammability...”

Descripción: “... system of Monteria in Colombia. Dangerousness (corrosivity, flammability and reactivity...”

Descripción: “... is dangerously in the hands of this an upstart discipline.” This statement made by muñoz (2011: 16), in book form...”