1. Environment Canada's research and development activities in land application of sludges;Chawla,1977
2. A perspective on land as a waste management alternative;Freshman,1977
3. Land application guidelines for sludges contaminated with toxic elements;Garrigan George;Journal WPCF,1977
4. Application of agricultural wastes to land;Loehr Raymond,1976
5. Pollution control in the palm oil industry—promulgation of regulations;Maheswaran;Planter,1977