TY  - BOOK
AU  - Laycock, George
TI  - The sign of the flying goose: : The story of the National Wildlife Refuges
SN  - 978-0-385-04314-4
U1  - 333.72 - Conservación-Recursos Naturales 
PY  - 1973///
CY  - New York: 
PB  - Anchor natural history books, 
KW  - For brant and bird watchers
KW  - Town
N1  - 1973
ER  -