SPENCER, Robert <br/><br/>
Report on bird-ringing for 1969 / 
Robert Spencer. 
 - repr. -- 
 -- [s.l. :   [s.n.],   1971 
 - P. 137-186 
<br/><br/> Sep. de : British Birds. Vol. 64 (1971) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aves - Informe anillamiento
<br/><br/><label>Universal Decimal Class. No.: </label>598.2:57.082.13(410)(047)