Some catalogs provide data on motions , variability, duplicity, etc.有的星表还提供了运动, 是否变光以及双星 、 聚星等等的资料.Yes, here are some catalogs and brochures.有的, 这里是一些目录和小册子.Cross - references are used in all forms of catalogs.相关参照用于各种形式...
Traditional library card catalogs provide lookup by three attributes: author, subject, and title.传统的图书馆分类卡片提供了3个查找特征, 即 作者, 科目和标题.Cross - references are used in all forms of catalogs.相关参照用于各种形式的目录.Yes, here are some cata...