1. Nutrient loss accelerated by clear-cutting of a forest ecosystem;BORMAN;Science, N.Y.,1968
2. The Control of Soil Fertility;COOKE,1967
3. The influence of arthropods and earthworms upon root growth of direct drilled cereals. J;EDWARDS;appl. Ecol.,1978
4. Nutrient budgets in rivers;OWENS;Symp. zool. Soc. Lond.,1972
5. Diet, nitrogen and standard of living;TANNER;Outlook Agric,1968