Sayn-Wittgenstein, L. <br/><br/>
Recognition of tree species on aerial photographs / 
by L. Sayn-Wittgenstein. 
 - Ottawa :  Forest Management Institute, Canadian Forestry Service, Dept. of Environment,  1978. 
 - iii, 97 p. :  ill. 
 - Information report ;  FMR-X-118 .
 - Information report (Forest Management Institute (Canada)) ;  FMR-X-118 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aerial photography in forestry--Canada.<br/>Aerial photography in botany--Canada.<br/>Trees--Identification.--Canada