TY - JOUR AB - AU - Thomas NICKLES DA - 1990/1// DO - 10.21825/philosophica.82435 IS - 0 VL - 45 PB - Department of Philosophy and Moral Science at Ghent University. PY - 1990 TI - Discovery Logics T2 - Philosophica UR - https://www.philosophica.ugent.be/article/id/82435/ ER -