B42F13/00—Filing appliances with means for engaging perforations or slots
B42F13/16—Filing appliances with means for engaging perforations or slots with claws or rings
B42F13/20—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges
B42F13/28—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges in two staggered sections
REVIEWS: De Frédéric II à Rodolphe II: Astrologie, divination et magie dans les cours (XIII e–XVII e siècle). Jean-Patrice Boudet, Martine Ostorero, and Agostino Paravicini Bagliani, eds. Micrologus Library 85. Florence: SISMEL Edizioni del Galluzzo, 2017. xxii+ 432 pp.€ 68.