Descripción
Publicado:Print began with: Vol 1, no 1, published in 1971?
Notas:"Official publication of the National Association for Clean Air."--Vol. 7, no. 1 (May 1986) cover.
Some issues may have been published in Pretoria.
Refereed/Peer-reviewed
Descripción Física:1 online resource
Frecuencia de Publicación:Twice yearly
ISSN:2410972X