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PH Weingarten, 05.10.2015. Referent: Prof. Dr. Mustermann ... However no clear guidelines which measurements one should use best ... 72 sounds. Landoltrings (up/ down) in two eccentricities (3° and 9°) ... attention. www.ph-weingarten.de.
31 Aug 2017 ... For others it signifies both of these conditions, and for yet others it describes systems where not only “invited experts” are able to comment.