Rothernberg. J & Heggie, G. I. (1947). Management of Water Quality and the Environment. Macmillan.
Chicago Edition CitationRothernberg. J and G. Ian Heggie. Management of Water Quality and the Environment. London: Macmillan, 1947.
ציטוט MLARothernberg. J and G. Ian Heggie. Management of Water Quality and the Environment. Macmillan, 1947.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.