Kelly, J. P., Tappen, S. L., ,
Informe técnico
Kelly, J. P., y S. L. Tappen. 1997. Patterns of abundance and distribution of wintering waterbirds in Tomales Bay, California. ACR Tech. Rpt. 89-12-2. Audubon Canyon Ranch, P.O. Box 808, Marshall, CA 94940.
Rancho Audubon Canyon
Apartado de correos 577
Stinson Beach, CA 94970