processes, patterns, and management Burt, T. P. Heathwaite, A. L. (A. Louise) Trudgill, Stephen T. (Stephen Thomas) 1947- text Chichester New York J. Wiley c1993 monographic x, 444 p. : ill., maps ; 25 cm. edited by T.P. Burt, A.L. Heathwaite, S.T. Trudgill. Includes bibliographical references and indexes. Nitrogen cycle Nitrates Environmental aspects Nitrogen in agriculture QH344 .N515 1993 574.5/222 0471934763 : 92023877 UOEL 000 20150504150914.0 000