Authors: Walther-Hellwig, K Frankl, R

Citation: K. Walther-hellwig et R. Frankl, Foraging habitats and foraging distances of bumblebees, Bombus spp. (Hym.,apidae), in an agricultural landscape, J APPL ENT, 124(7-8), 2000, pp. 299-306

Authors: Walther-Hellwig, K Frankl, R

Citation: K. Walther-hellwig et R. Frankl, Foraging distances of Bombus muscorum, Bombus lapidarius, and Bombus terrestris (Hymenoptera, Apidae), J INSECT B, 13(2), 2000, pp. 239-246