TY - JOUR AB - AU - Lode Frederix DA - 1987/6// DO - 10.21825/uvm.v4i2.1235 IS - 2 VL - 4 PB - PY - 1987 TI - George Berkeley T2 - De Uil van Minerva UR - https://openjournals.ugent.be/deuilvanminerva/article/id/66066/ ER -