Ḳibuts ha-artsi ha-shomer ha-tsaʻir (Israel), Yehudit Selaʻ-Ṿiner, M. Yelin-Shṭeḳlis, Iḥud ha-ḳevutsot ṿeha-ḳibutsim (Israel), Janusz Korczak, Ḳibuts ha-meʼuḥad