F.E. Clark and T. Rosswall, Editors, Terrestrial Nitrogen Cycles, Ecological Bulletin No. 33, Swedish Natural Science Research Council (1981) ISBN 91-546-0290-4, p. 714.
1982 ◽
Vol 22
(9)
◽
pp. 675-676
1982 ◽
Vol 22
(9)
◽
pp. 675-676
1987 ◽
pp. 345-350
◽
1977 ◽
Vol 8
(3)
◽
pp. 238-239
◽