WHITEMAN , P . C / WARING , S .A / et .al. TROPICAL PASTURE SCIENCE P .C .WHITEMAN / S. A . WARING / E . S . WALLIS / R . C . BRUCE . - OXFORD OXFORD UNIVERSITY PRESS 1980 - 391p.;ill.: pbk ISBN: 0198594712 LC Class. No.: SB193 .3.T7 1980