The astronomer specialized in studying the magnitude of stars and classifying their brightness.
Pregnancy category-A system of classifying drugs according to their established risks for use during pregnancy.
The system of classifying the revenue into separate funds has frequently produced annual deficits, which are, as a rule only nominal, since the total receipts exceed the total expenditures.
Thirty-five of these languages, with 69 dialects, he succeeded in classifying under II linguistic families.
The existence of groups or families of allied languages, each group being evidently descended from a single language, affords one of the principal aids in classifying nations and races.