Almanacs , atlases , av catalogs

年鉴、地图册、授权目录

He kept his hobby of collecting old almanacs for so many years .

多年来他一直保持着收集旧历书的嗜好。

Using reference books : atlas ( a collection of maps ) , encyclopedias and almanacs .

使用参考书:地图集,百科全书,及年鉴.

From homework help to art definitions to almanacs , students of all ages will find reference material here .

从辅导家庭作业，到艺术定义，再到年鉴，各个年龄层次的学生都可以在这里找到参考素材。