TY - JOUR AB - AU - R.M. MARTIN DA - 1977/1// DO - 10.21825/philosophica.82670 IS - 0 VL - 19 PB - Department of Philosophy and Moral Science at Ghent University. PY - 1977 TI - On tense, aspect, modality and meaning T2 - Philosophica UR - https://www.philosophica.ugent.be/article/id/82670/ ER -