1. 01-01-1997 96 pages, illustrated, photos
  2. 01-01-1964 160 pages, illustrated
  3. Silkworms are not actually worms at all. They are the caterpillars of a large white moth. Many moth caterpillars produce silk thread inside their bodies, but the thread of the silkworm is so fine and strong that human beings use it to make a beautiful fabric. In countries like Japan, people raise...