TY - GENERIC DO - 10.20944/preprints201909.0173.v1 UR - http://dx.doi.org/10.20944/preprints201909.0173.v1 TI - Leading Schools towards Sustainability. Fields of Action and Management Strategies for Principals T2 - Preprints AU - Müller, Ulrich AU - Lude, Armin AU - Hancock, Dawson R. PY - 2019 DA - 2019/09/16 PB - Preprints