Title: P. L. H. leḳeṭ shel 6 peʻiluyot la-sevivah ha-ḳerovah be-nośʾe ekhut ha-sevivah /
Authors: Or, Yosef.; Smish-Dagan, Sharon.; Ḥevrah la-haganat ha-ṭevaʻ.
Year: 1993
Subjects: Ecology Study and teaching Israel.