Falkus, Hugh <br/><br/>
Nature detective / 
by Hugh Falkus 
 - England :  Penguin books,  1978. 
 - 256p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nature detective work
<br/><br/><label>Dewey Class. No.: </label>591.5  / FAL.N