0313263086 SHOW MOOCHABLE + ? RELATED SEARCHES > ADVANCED SEARCH > SHOW COVERS + ASIN Copies Charles L. Elkins Robert Silverberg's Many Trapdoors: Critical Essays on His Science Fiction (Contributions to the Study of Science Fiction and Fantasy) 0 Search BookMooch for a book: SEARCH BOOKMOOCH > Search Amazon for a book: amazon.co.uk amazon.de amazon.es amazon.fr amazon.it amazon.cn SEARCH AMAZON >