1.

העזניה מאת רון פרומקין

2.

Migrating birds know no boundaries : scientific and educational aspects of migrating bird conservation (1997) International Center For The Study Of Bird Migration At Latrun And The Israel Ornithology Center

Migrating birds know no boundaries : scientific and educational aspects of migrating bird conservation (1997) מאת International Center For The Study Of Bird Migration At Latrun And The Israel Ornithology Center