Gabriele, S. F. (2017) “TPO Theory, Boulding’s Typology, and the Display/Pickup Poster”, Proceedings of the 59th Annual Meeting of the ISSS - 2015 Berlin, Germany, 1(1). Available at: https://journals.isss.org/index.php/proceedings59th/article/view/2536 (Accessed: 19September2024).