The book is called "Ventilation: A Practical Guide". By Nancy Clark, Thomas Cutter and Jean-Anne McCrane. Published bythe Center for Occupational Hazards Inc. ISBN 0-918875-00-5.
Kodak has some really good tech pamphlets on safety topics, like this one:
The NPPA put out a booklet years ago about health & safety issues in the darkroom--called "Making Darkrooms Safe Rooms"--somehow I think this is out of print now, but if you're interested, I can dig out a copy for the ISBN number as well.
hope this helps.