SPENCER, Robert Report on bird-ringing for 1966 / by Robert Spencer. - repr. -- -- [s.l. : [s.n.], 1967 - P. 429-475 Sep. de : British Birds. Vol. 60 (1967) Subjects--Topical Terms: Aves - Informe anillamiento Universal Decimal Class. No.: 598.2:57.082.13(410)(047)