Identifying

Contains color illustrations and descriptions of over ninety World War II planes, providing information about the dimensions, loaded weight, armament, and number built of each aircraft; grouped by country.

Presents a general introduction to frogs and toads, discussing what they eat, where they live, how to tell them apart, and how they reproduce; and features descriptions and photographs of one hundred species of frogs and toads, with information on location, active periods, habitat, and rarity.

Contains color illustrations and descriptions of more than one hundred gems, providing information about the physical and optical properties of each variety; and includes an introductory essay that discusses the structure, color, and fashioning of gemstones.

Contains color illustrations and descriptions of ninety breeds of horses, providing information about each breed's characteristics, origins, and uses; arranged by region.

Contains color reproductions of all the flags of independent nations of the world, with information on each flag's country, constituents, and dependencies.

Contains illustrations and descriptions of over one hundred bugs and beetles, providing information about the general characteristics, and known distribution of each species.

Contains illustrations and descriptions of over one hundred rocks and minerals, providing information about each specimen's distinctive features, color, uses, and occurrence.