Encyclopedia of environmental science and engineering. 2V /

by Pfafflin, J. R.
Published 1976

Advances in environmental science and engineering V.1

by Pfafflin, J R
Published 1979

Encyclopedia of environment science and engineering V.1

by pfafflin, J.R
Published 1976

Encyclopedia of environmental science and engineering V.2

by Pfafflin, J.R
Published 1976

Encyclopaedia of environmental science and engineering, Vol.1: A to M

by Pfafflin, J R, Ed.; Ziegler, E N, Ed
Published 1976

Encyclopaedia of environmental science and engineering, Vol.2: N to Z

by Pfafflin, J R, Ed.; Ziegler, E N, Ed
Published 1976