1.
Environmental Instrumentation and Analysis Handbook
by Down, Randy D., Lehr, Jay H.
ISBN: 9780471463542
List Price: $221.00
2.
Environmental Control Systems (Independent Learning Module from the Instrument Society of Am...
by Randy D. Down
ISBN: 9781556173332
List Price: $76.00
3.
Handbook of Environmental Instrumentation
by Down, Randy D., Esposito, Bob
ISBN: 9780070174986
List Price: $110.00