Proceedings of the International Conference on New Technology for Wastewater Treatment and Sewerage in Rural and Suburb Areas, 3.-6.10.1983 Hanasaari, Finland
by Pentti Rantala, Erkki Santala, Hannu Vikman, International Conference on New Technology for Wastewater Treatment and Sewerage in Rural and Suburb Areas (1983 Hanasaari)
Writing a summary for young readers…
For young readers
Book data: Open Library