Unesco <br/><br/>
Plant responce to climatic factors 
edited by R.O. Slatyer 
 - Paris  Unesco  1973 
 - 574p.:ill.;  28cm.- 
 - Ecology and conservation; no.5 .
<br/><br/> Proceeding of the Uppsala Symposium 
<br/><br/><label>Dewey Class. No.: </label>581.5  / UNESCO