Proceedings : London School of Hygiene and Tropical Medicine, 22-24 September, 1970.
Symposium on the Health Problems of Industrial Progress in Developing Countries(1970 :London)
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Trades Union Congress.Centenary Institute of Occupational Health.
[London] :  Ross Institute of Tropical Hygiene :  TUC Centenary Institute of Occupational Health, 
[1971]
Reprinted from the Journal of tropical medicine and hygiene, November & December, 1970.