Proceedings of the 5th International Peat Congress : Poznan, Poland, September 21-25, 1976.
International Peat Congress.5th,Poznan,1976.
Warsaw : Wydawnictwa Czasopism Technicznych Not,
1976-1977.
v. 1. Peat and peatlands in the natural environment protection. -- v. 2. New recognitions of peatlands and peat. -- v. 3. New ideas and technologies in utilization of peatlands and peat. -- v. 4. Congress report.
Peat