Clean air
Illangovan, P
Clean air action plan for air quality management in the Colombo metropolitan area [Text] Sri Lanka, Ministry of Policy Planning and Implementation - Colombo MEIP 1992 - ii, 27 p. ill. 29 cm.
Social Problems and Sciences
363.7392095493 / SRI
Clean air action plan for air quality management in the Colombo metropolitan area [Text] Sri Lanka, Ministry of Policy Planning and Implementation - Colombo MEIP 1992 - ii, 27 p. ill. 29 cm.
Social Problems and Sciences
363.7392095493 / SRI