Filtering by: Creator Needham, S P Remove constraint Creator: Needham, S P Creator Sheridan, J A Remove constraint Creator: Sheridan, J A Creator Troalen, Lore Remove constraint Creator: Troalen, Lore Availability External link (access may be restricted) Remove constraint Availability: External link (access may be restricted) Type Book Contribution Remove constraint Type: Book Contribution Library of congress classification sim NK Remove constraint Library of congress classification sim: NK