<nowiki>Petrus Theodorus Arnoldus Swillens; Petrus Theodorus Arnoldus Swillens; Petrus Theodorus Arnoldus Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Petrus Theodorus Arnoldus Swillens; Petrus Theodorus Arnoldus Swillens; Petrus Theodorus Arnoldus Swillens; Petrus Theodorus Arnoldus Swillens; Petrus Theodorus Arnoldus Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Petrus Theodorus Arnoldus Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; Dutch art historian, 1890-1963; Nederlands kunsthistoricus (1890-1963); Pieter Swillens; Pieter Swillens; Pieter Swillens; Petrus Theodorus Arnoldus Swillens; P.T.A. Swillens; Pieter Swillens; Pieter Swillens; Pieter Swillens; P. T. A. Swillens; P. T. Swillens; Petrus Swillens; Piet Swillens; Piet T. A. Swillens; Pieter Swillens; Petrus Theodorus Arnoldus Swillens; Pieter Swillens; Pieter Swillens</nowiki>