These science - fiction books are great for reading and collecting. To use them, simply open the cover and start exploring the wonderful world of science - fiction stories. When handling the books, be gentle as the dust jackets are in worn condition and can tear easily. For storage, keep them in a dry and cool place to prevent further discoloration of the pages. Avoid exposing them to direct sunlight for long periods. If you notice any loose pages, you can use some archival - quality glue to fix them carefully.