Wildfowl and water counts, 1986-87 : the results of the national wildfowl counts and the birds of estuaries enquiry in the United Kingdom ; cover drawing by Sir Peter Scott /
Salmon, D. G.,author.
Prys-Jones, R. P.,author.
Kirby, J. S.,author.
Scott, Peter,1909-1989.
Includes conference leaflet.
Includes bibliographical references.