كتب ذات صلة

The walks abroad of two young naturalists

Syllabus of lectures. Nature study.

Study of animal families in schools

School gardening and nature study in English rural schools and in London.

• Synoptical flora of North America
  المؤلفون: Gray, Asa ,  Watson, Sereno
• Sixty lessons in agriculture
  المؤلفون: Buffum, B. C. ,  Deaver, David Clement.
• A practical flora for schools and colleges
  المؤلفون: Willis, Oliver R.