Nicholson, E.M <br/><br/>
Handbook to the conservation section of the international Biological programme 
compiled by E.M.Nicholson 
 - Oxford  Blackwell Sciientific Publications  1968 
 - 84p.; 21cm.- 
 - IBP handbook no.5 .
<br/><br/><label>Dewey Class. No.: </label>574.5  / NIC