[24] Edmondson, “Phosphorus, Nitrogen, and Algae in Lake Washington,” pp.
;
690—91 (see [S]).
,
[25] D. H. Kohl, C. B. Shearer, and
“Fertilizer Nitrogen: Contri—
butions to Nitrate Surface Water in a Corn Belt Watershed,” Science, Decem'
ber 9.4, 1971, Volume 174, 13314334.
[26]
Summary, Pollution Control Board Hearings on Plant Nutrient Proposals, Hear—
ing No. 6, held by State of Illinois Pollution Control Board, November 3, 1971,
Urbana, Illinois.
'
[27] Man in the Living Environment, The Institute of Ecology Report Of the Work—
shop on Global Ecological Problems, 1971, p. 57.
[28]
Chemical Week, “Fertilizers Win First Round in Runoff Fracas,” February 9,
1972, Vol. 110, No. 6, 11—12.
[29] Phosphates in Detergents and the Eutrophication of America’s Waters, 23313 re—
port by the Committee on Government Operations (Washington, D.C.: U.S.
Government Printing Ofce, April 14, 1970).
‘
[30]
Lake Brie Report: A Plan for Water Pollution Control, U.S. Department of Inte—
rior, Federal Water Pollution Control Administration, Great Lakes Region,
'
August 1968, p. 56.
'
[31] Edmondson, “Phosphorus, Nitrogen, and Algae in Lake Washington,” pp.
690—91 (see [S]).
[32] Pollution of Lake Erie, Lake Ontario, and the International Section of the St.
Lawrence River, p. 70 (see [18]).
Ç
[33] Herbert
E. Wright and Robert 0. Megard, “Lake Mimetonka: Nutrients, Nu—
trient Abatement, and the Photosynthetic System of the Phytoplankton,” nal
_
'
report for the Ofce of Water Resources Research Project, University of Min—
nesota, December 1970, pp. 32—53.
[34]
R. Vallentyne, “Phosphorus and the Control of Eutrophi'cation,” Canadian
‘
,
Research and Development,"May/}ue 1970, Vol.‘3, No. 3, 36—49.
[35] John H. Ryther and William M. Dunstan, ‘.‘Nitrogen, Phosphorus, and Eu—
r°t1'0phication in the Coastal Marine Environment,” Science, March 12, 1971,
Vol. 171, 1008—1013.
[36]
G. E. Likens,
.
Barts‘ch, G. H. Lau, and]. E. Hobbie, “Nutrients and Eutrophication,” Science, May 21,»1971, Vol. 172, 8713—74.
[37] Vallentyne, “Phosphorus and th’eCÔntrol Of Eutrophication,” p. 37 (see [34]).
[38]
G. Lee, “Eutrophication,” the University of Wisconsin Water Resources
Center, Eutrophication Infom1ationÎProgram, September“ 1970, pp. 9—10.
[39] lesplrates
in Detergèlzts, pp. 19—20(see[291).
_
\ 40]
“Cultural
BioScience, May
_
No. 5, 425—31.
à
«";
,
_
_
;
690—91 (see [S]).
,
[25] D. H. Kohl, C. B. Shearer, and
“Fertilizer Nitrogen: Contri—
butions to Nitrate Surface Water in a Corn Belt Watershed,” Science, Decem'
ber 9.4, 1971, Volume 174, 13314334.
[26]
Summary, Pollution Control Board Hearings on Plant Nutrient Proposals, Hear—
ing No. 6, held by State of Illinois Pollution Control Board, November 3, 1971,
Urbana, Illinois.
'
[27] Man in the Living Environment, The Institute of Ecology Report Of the Work—
shop on Global Ecological Problems, 1971, p. 57.
[28]
Chemical Week, “Fertilizers Win First Round in Runoff Fracas,” February 9,
1972, Vol. 110, No. 6, 11—12.
[29] Phosphates in Detergents and the Eutrophication of America’s Waters, 23313 re—
port by the Committee on Government Operations (Washington, D.C.: U.S.
Government Printing Ofce, April 14, 1970).
‘
[30]
Lake Brie Report: A Plan for Water Pollution Control, U.S. Department of Inte—
rior, Federal Water Pollution Control Administration, Great Lakes Region,
'
August 1968, p. 56.
'
[31] Edmondson, “Phosphorus, Nitrogen, and Algae in Lake Washington,” pp.
690—91 (see [S]).
[32] Pollution of Lake Erie, Lake Ontario, and the International Section of the St.
Lawrence River, p. 70 (see [18]).
Ç
[33] Herbert
E. Wright and Robert 0. Megard, “Lake Mimetonka: Nutrients, Nu—
trient Abatement, and the Photosynthetic System of the Phytoplankton,” nal
_
'
report for the Ofce of Water Resources Research Project, University of Min—
nesota, December 1970, pp. 32—53.
[34]
R. Vallentyne, “Phosphorus and the Control of Eutrophi'cation,” Canadian
‘
,
Research and Development,"May/}ue 1970, Vol.‘3, No. 3, 36—49.
[35] John H. Ryther and William M. Dunstan, ‘.‘Nitrogen, Phosphorus, and Eu—
r°t1'0phication in the Coastal Marine Environment,” Science, March 12, 1971,
Vol. 171, 1008—1013.
[36]
G. E. Likens,
.
Barts‘ch, G. H. Lau, and]. E. Hobbie, “Nutrients and Eutrophication,” Science, May 21,»1971, Vol. 172, 8713—74.
[37] Vallentyne, “Phosphorus and th’eCÔntrol Of Eutrophication,” p. 37 (see [34]).
[38]
G. Lee, “Eutrophication,” the University of Wisconsin Water Resources
Center, Eutrophication Infom1ationÎProgram, September“ 1970, pp. 9—10.
[39] lesplrates
in Detergèlzts, pp. 19—20(see[291).
_
\ 40]
“Cultural
BioScience, May
_
No. 5, 425—31.
à
«";
,
_
_