William T Hassler

William T Hassler is the author of "Clean Coal/Dirty Air" and "Clean Coal".

Books by William T Hassler

Clean Coal
Ackerman, Bruce A.
Hardback: $30.00

Clean Coal/Dirty ...
Ackerman, Bruce
Paperback: $23.00

Clean Coal/Dirty ...
Ackerman, Bruce
Electronic book text: $39.10

Clean Coal/Dirty ...
Ackerman, Bruce
Paperback: