1979 - Condensed Pyrazines [Chemistry of Heterocyclic Compounds] (Hardcover) ISBN-13: 9780471382041 ISBN-10: 0471382043 ? |
1979 - Condensed Pyrazines [Chemistry of Heterocyclic Compounds] (Hardcover) ISBN-13: 9780471382041 ISBN-10: 0471382043 ? |