1. Nitrates: An Environmental Assessment Panel on Nitrates;National Research Council,1978
2. LAWPR Specialized Conference;Landner,1975
3. Major industrial processes: Sources of nitrogenous compounds in the environment, in Nitrogenous compounds in the environment;Davis,1973
4. Nitrogen Fixation in Bacteria and Higher Plants;Burns,1975
5. A tapered fluidized-bed as a bioreactor;Scott,1977