TY - RPRT TI - [PROVISIONAL METHODICAL INSTRUCTIONS FOR PERFORMING EXPERIMENTAL RESEARCH FOR DETERMINING THE MAXIMUM PERMISSIBLE CONCENTRATION OF POISONOUS SUBSTANCES IN THE AIR OF INDUSTRIAL ENTERPRISES]. AU - V A LUTOV PY - 1964 UR - https://pubmed.ncbi.nlm.nih.gov/14259385/ ID - 14259385 ER -