Philip José Farmer, The Green Odyssey, Sphere, 1983 3rd printing. Cover: Angus McKie. The Defence of Terra from Cowley's Great Space Battles.
By silver_cougar4061
It also seems like this was used as the cover for Gianni Montanari (ed.), *Galassia #224* (Casa Editrice La Tribuna, 1977) and for Philippe Randa, *Périls sur Mû* (Fleuve Noir, 1988).