Du Plessis, J.J.L.2017-03-172017-03-172007-10Du Plessis, JJL 2007, 'Challenges facing occupational environment professionals and their future', Journal of the Mine Ventilation Society of South Africa, pp. 18-22.0368-3206http://hdl.handle.net/2263/59450No abstract available.en© Mine Ventilation Society of South AfricaHealthCostsIndustryEnergyArticle