Field treatment of desert locust (Schistocerca gragaria Forskal) hoppers in the field in Mauritania with an oil formulation of the entomopathogenic fungus Metarhizium flavoride - Langewald, J.; Kooyman, C.; Douro-Kpindou, O.K.; Lomer, C.; Dahmoud, A.; Mohamed, H. (1997)