00526cam a2200133 a 450000500170000000800410001703500120005804100080007010000350007824500960011326001350020950000220034450000260036620260501142804.0880727s1970 ne af b 00010 eng d a2437973 aeng1 aAsperen de Boer, J. R. J. van.10aInfrared reflectography : a contribution to the examination of earlier European paintings / aAmsterdam, the Netherlands :bPublished by and available from the Central Research Laboratory for Objects of Art and Sciencec1970 aSummary in Dutch. aErrata slip inserted.