Vegetable productivity  the role of vegetables in feeding people and livestock  proceedings of a symposium held at the Royal Geographical Society, London, on 27 and 28 September 1979 
edited by C.R.W. Spedding 
 - London  Macmillan  1981 
 - xi, 268 p.  ill.  24cm 
 - Symposia of the Institute of Biology  no.25 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vegetables<br/>Nutrition<br/>Animal nutrition