A couple of reflections concerning training of wastewater treatment plant operators in EstoniaMölder, Heino; Sokk, OlevInternational Conference on Small Wastewater Treatment Plants : Anykšciai, Lithuania, May 12-13, 1999 : abstracts1999 / p. 107-109

On-site and small wastewater treatment plants in EstoniaKuusik, AareInternational Conference on Small Wastewater Treatment Plants : Anykšciai, Lithuania, May 12-13, 1999 : abstracts1999 / p. 45-52