Kittelman, S. M. (2020) “ASSESSING THE BEHAVIOR OF HUMAN ACTIVITY SYSTEMS THROUGH THE OBSERVATION AND INTERPRETATION OF SOCIOTECHNICAL SIGNS”, Proceedings of the 63rd Annual Meeting of the ISSS - 2019 Corvallis, OR, USA, 63(1). Available at: https://journals.isss.org/index.php/proceedings63rd/article/view/3573 (Accessed: 22October2021).