References
- APHA . 1992 . “Standard Methods for the Examination of Water and Wastewater” , (18th edn.) , Washington, D.C. : American Public Health Association .
- Chang , C. H. and Hao , O. J. 1996 . J. Chem. Tech. Biotechnol. , 67 : 27 – 38 .
- Hach . 1985 . “Hach Company Technical Information Service Booklet No. 8” Loveland, CO
- Jones , H. R. 1974 . “Pollution Control in the Dairy Industry” , New Jersey : Noyes Data Corporation .
- Norcross , K. L. 1992 . Water Science Tech. , 26 : 2523 – 2526 .
- Pico , R. F. 1988 . J. Water Pollution Control Federation , 60 (16) : 874 – 876 .
- SAS Institute, Inc. 1996 . SAS® System for Microsoft® Windows™, Release 6.12 , Cary, NC : SAS Institute, Inc. .
- Approved for publication by the Director of the Louisiana Agricultural Experiment Station as Manuscript Number 99–15–0127
- Corresponding author; e‐mail: [email protected]