References
- Wells , G. P. 1945 . The mode of life of Arenicola marina L . Journ. Mar. Biol. Assoc. , xxvi : 170 – 207 .
- Evans A. C. Studies on the Relationships between Earthworms and Soil Fertility.—II. Some Effects of Earthworms on Soil-structure Ann. Appl. Biol. in press 1948 xxxv