FOR USE IN SCHOOLS AND LIBRARIES ONLY. A story-poem about the activities of such unusual animals as the Nook, Wump, Yink, Yop, Gack, and the Zeds.FOR USE IN SCHOOLS AND LIBRARIES ONLY. A story-poem about the activities of such unusual animals as the Nook, Wump, Yink, Yop, Gack, and the Zeds.