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The system of natural history

• Ornithology : the natural history of birds : third-book of natural history prepared for the use of schools and colleges
  Author(s): Milne-Edwards, H. ,  Ruschenberger, W. S. W.
• Elements of mammalogy prepared for the use of schools and colleges.
  Author(s): Ruschenberger, W. S. W.
• Elements of natural history : embracing zoology, botany and geology for schools, colleges and families
  Author(s): Ruschenberger, W. S. W.