1. and Research Bulletin 80-1, Dept. of Agricultural Engineering, University of Alberta, Edmonton, Alberta (1980).
2. and paper No. 77-4054 presented at the 1977 Annual Meeting (Am. Soc. Agric. Eng.), North Carolina State University, Raleigh, NC, June 26-29 (1977).
3. and paper presented at the U.S. Dept. of Environment Workshop/Seminar on anaerobic filters, Honey-in-the-Hills, Florida, January 9-10 (1980).
4. and paper No. PNW-81-501, presented at the 1981 Annual Meeting, Pacific Northwest Region, ASAE (Am. Soc. Agric. Eng.), Edmonton, Alberta. Sept. 2-4 (1981).