"Anifeiliaid erstalwm" . . "Mga hayop noong unang panahon" . . "Animals of long ago"@en . "Animals of long ago" . . . . . . . "Introduces early animals of the land and the sea." . . . . "Juvenile works" . "Mga hayop noong unang panahon = Animals of long ago" . "Juvenile works"@en . . . . . . . . . . . "Paleontology." . . "Paleontology Juvenile literature." . .