TY - BOOK AU - Irina Engeness TI - P.Y. Galperin's Development of Human Mental Activity T2 - Cultural Psychology of Education SN - 9783030640224 SN - 23646780 PB - Springer International Publishing N1 - Online Resources UR - https://link.springer.com/openurl?genre=book&isbn=978-3-030-64022-4 UR - https://doi.org/10.1007/978-3-030-64022-4 ER -