"Classification"@en . "Classification" . . "Juvenile works"@en . "Juvenile works" . . "Classifying mammals"@en . "Classifying mammals" . . "Explains what mammals are and how they differ from other animals, with an overview of the life cycle of a variety of mammals, including pouched mammals, sea mammals, flying mammals, and humans."@en . . "Explains what mammals are and how they differ from other animals, with an overview of the life cycle of a variety of mammals, including pouched mammals, sea mammals, flying mammals, and humans." . . . . . . . .