Animal behaviour / J D Carthy
World beneath the oceans / T. F. Gaskell; with paintings by Barry Evans
L´homme dans le fleuve du vivant / Konrad Lorenz; introd. Irenaüs Eibl-Eibesfeldt; trad. Jeanne Étoré
Improvement of livestock production in warm climates / R. E. Mcdowell; Richard G. Jones [et al]...