On human activities and the environment
Classified like books in a library:
A. General Works
B. Philosophy and Religion
C. History and Geography
D. Social Sciences and Industry
E. Science and Technology
F. Art, Literature, and Others

Research Fellow at Institute of Developing Economies (IDE), Japan
On human activities and the environment
Classified like books in a library:
A. General Works
B. Philosophy and Religion
C. History and Geography
D. Social Sciences and Industry
E. Science and Technology
F. Art, Literature, and Others