Riddiford, Nick <br/><br/>
Seasonal movements of summer migrants / 
Nick Riddiford, Peter Findley. 
 -- Tring (Beech Grove, Tring, Herts.) :   British Trust for Ornithology,   1981. 
 - 84p. :  il. 
 (BTO guide ; ; 18).
 - BTO guide ;  18 .
<br/><br/>Bibliography: p84. 
<br/><br/>ISBN  Unpriced (pbk) 
<br/><br/><label>Nat. Bib. No.: </label>GB8217459  bnb 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aves--Migración--Gran Bretaña
<br/><br/><label>LC Class. No.: </label>QL698.9 
<br/><br/><label>Universal Decimal Class. No.: </label>598.2:591.543.43