G. Purvis, J. P. Curry, The Influence of Weeds and Farmyard Manure on the Activity of Carabidae and other Ground-Dwelling Arthropods in a Sugar Beet Crop, Journal of Applied Ecology, Vol. 21, No. 1 (Apr., 1984), pp. 271-283
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Purvis et al. (1984) studied this question.