Introduces important scientific principles and provides basic definitions of common terms in standard alphabetical arrangement with references to related entrie

Accurate, approachable, and indispensable, this illustrated science encyclopedia is arranged in such categories as "Planet Earth", "Living Things", "Chemistry a

Let your child take their first look at the animal kingdom in My First Encyclopedia of Animals. This beautiful first reference book boasts over 500 detailed col

"Minutes, months, millennia - how long is a life on earth?"

History leaps from the page in this completely revised and updated edition of the critically acclaimed Kingfisher History Encyclopedia. From man's earliest hist