MAP20090081123Tracking toxic substances at industrial facilities : engineering mass balance versus materials accounting / Committee to Evaluate Mass Balance Information for Facilities Handling Toxic Substances, Board on Environmental Studies and Toxicology, Commissio on Geosciences, Environment, and Resources. — Washington, D.C. : National Academy Press, 1990X, 188 p. ; 27 cm.Fondo donado por el Sr. Enrique González Fernández, del INSHTSumario: Executive summary -- Introduction -- Approaches to obtaining mass balance information -- Uses of materials accounting data -- Accuracy of toxic chemical release estimates -- Assessing waste-reduction efficiency -- Evaluating toxic chemical management practices