Air pollution reference measurement methods and systems : proceedings of the international workshop, Bilthoven, December 12-16, 1977
organised by the National Institute of Public Health, Bilthoven, The Netherlands and co-sponsored by the World Health Organization ; edited by T. Schneider, H. W. de Koning, L. J. Brasser
(Studies in environmental science, 2)
Elsevier Scientific Pub. Co. , distributors for the U.S. and Canada, Elsevier/North-Holland, 1978