TY  - BOOK
AU  - Williamson,Kenneth
TI  - Identification for ringers
T2  - British Trust for Ornithology identification guide
U1  - KUŞ 598.8 WI.I 1968 23
PY  - 1968///
CY  - Tring
PB  - British Trust for Ornithology
KW  - Sylviidae
KW  - Wood warblers
N1  - "Tansu Gürpınar" tarafından bağışlanmıştır; Includes bibliographical references
ER  -