Transactions of the general meeting and the conferences. Medical, Chemical-tox-
614.850631 .I646r.20. .
Industrial Hygiene Foundation of America. 20 Reunión. Pitts-
Transactions of the general meeting and the conferences. Medical, Chemical-tox- . -- Pittsburg: Mellon Institute, 1955. 274 p., 23 cm.
017835
Higiene industrial - Congresos