Microsoft Word Driver Prolog (Version H)

Reinig, W.F., 1939. Die evolutinsmechanismen, erläutert an den Hummeln. Zoologischer Anzeiger,
suppl. 12 : 170-206.
Reinig, W.F., 1970. Bastardierungszonen und Mischpopulationen bei Hummeln (Bombus) und
Schmarotzerhummeln (Psithyrus) (Hymenoptera, Apidae). Mitteilungen der Münchner
Entomologischen Gesellschaft, 59 : 1-89.
Reinig, W.F., 1972. Ökologische Studien an mittel- und südeuropäischen Hummeln (Bombus Latr.,
1802; Hym., Apidae). Mitteilungen der Münchner Entomologischen Gesellschaft, 60 : 1-56.
Rohlf, J. F., 1993. Ntsys-PC version 1.8. Numerical and multivariate analysis system. Applied
biostatistics, Inc.
Rouire, J. & C. Rousset, 1973. Causses Cévennes Aubrac. Guides géologiques régionaux. Masson &
Cie éd. 185 pp.
Teräs I., 1978. The activity of social wasps (Hymenoptera, Vespidae) at low temperatures. Annales
Entomologici Fennici. 44 : 101-104.
Teräs, I., 1976b. Bumblebees, Bombus Latr. (Hymenoptera, Apidae), on red clover in south Savo,
Finland. Annales Agriculturae Fenniae. 15 : 107-127.
Teräs, I.,1976. Flower visits of bumblebees, Bombus Latr. (Hymenoptera, Apidae), during one
summer. Annales Entomologici Fennici, 13 : 200-232.
Teräs, I.,1983. Estimation of bumblebees densities (Bombus, Hymenoptera). Acta entommologica
Fennnica, 42 : 103-113.
Williams, P. H., 1989. Why are there so many species at Dungeness? Botanical journal of the Linnean
society, 101 : 31-44.
Williams, P. H., 1991. The bumblebees of the Kashmir Himalaya (Hymenoptera : Apidae, Bombini).
Bulletin British Museum (Natural History. Entomology series. 60(1) : 204 pp..
Wilson, E. O., 1993. La diversité de la vie. Odile Jacob éd.. Sciences. 496 pp..