Gray, N. F.
Biology of wastewater treatment : N. F. Gray - 1st ed. - Oxford Oxford University Press 1989 - viii, 828 p. ill.
includes bibliographics
0198563701
Sewage purification-biological
628.351 / GRA/1989
Biology of wastewater treatment : N. F. Gray - 1st ed. - Oxford Oxford University Press 1989 - viii, 828 p. ill.
includes bibliographics
0198563701
Sewage purification-biological
628.351 / GRA/1989