R. H. Helmholz 10493022K www Mon, 07/01/2019 - 12:00 R. H. Helmholz, Paul Hyams & Ken Pennington, "Raoul C. van Caenegem", 94 Speculum 947 (2019). 10493022K "Raoul C. van Caenegem", 94 Speculum 947 (2019) (with Paul Hyams & Ken Pennington). 0 Journal Article