TY  - BOOK
AU  - Johnston,David W.
TI  - The annual reproductive cycle of the California gull
T2  - Condor
U1  - 598.338 23
PY  - 1956///
CY  - [U.S.A.]
KW  - Larus californicus
N1  - Reprinted from The Condor: Vol. 58, March-April, 1956, Number 2, pp. 134-162 and Vol. 58, May-June, 1956, Number 3, pp. 206-221
ER  -