1. Biomass production by some marine and freshwater plants;Ryther,1978
2. Freshwater macrophytes for energy and wastewater treatment;Ryther,1979
3. Primary production of some freshwater macrophytes;DeBusk;Aquatic Botany,1979
4. Some aspects of the growth and yield of Gracilaria tikvahiae in culture;Lapointe;Aquaculture,1978
5. Standard methods for the examination of water and wastewater;American Public Health Association,1971