| وصف مادي: | 2 v. : ill. ; 24 cm. |
|---|---|
| بيبلوغرافيا: | Includes bibliographical references and index. |
| ردمك: | 9780387793870 |
| وصف مادي: | 2 v. : ill. ; 24 cm. |
|---|---|
| بيبلوغرافيا: | Includes bibliographical references and index. |
| ردمك: | 9780387793870 |