1. Gezond drinkwater,1976
2. Health effects relating to direct and indirect re-use of waste water for human consumption;WHO, International Reference Centre for Community Water Supply,1975
3. Organic micropollution in Rhine and Meuse;van de Leer,1976
4. Organic chemicals present in Rhine water in The Netherlands during 1976–1978;Morra,1978
5. Sensory assessment and chemical composition of drinking water;Zoeteman,1978