What are the uses for an atlas, almanac, bartlett's, masterplots, benet's reader's encyclopedia, britannica?

atlas 1) a bound collection of maps often including illustrations, informative tables, or textual matter, 2) a bound collection of tables, charts, or plates almanac 1) a publication containing astronomical and meteorological data for a given year and often including a miscellany of other information 2) a usually annual publication containing statistical, tabular, and general information encyclopaedia (britannica) 1) a work that contains information on all branches of knowledge or treats comprehensively a particular branch of knowledge usually in articles arranged alphabetically often by subject more