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Online Databases
Classified Subject Guide and Index: Vertebrates: Cold-blooded 
| LEVEL: 3 |
[See also Volume 3: Subjects of the Yearbook of International Organizations. Detailed information about UIA's subject system can be found here.]
Classified Subject Guide and Index: Vertebrates: Cold-blooded
| LEVEL: 3 |
[See also Volume 3: Subjects of the Yearbook of International Organizations. Detailed information about UIA's subject system can be found here.]