ボリビアにおけるコーヒー生産
This article includes text incorporated from Pan American Union's "Coffee: extensive information and statistics" (1902), a publication now in the public domain.
This article includes text incorporated from H.C. Graham's "Coffee: Production, trade, and consumption by countries" (1912), a publication now in the public domain.
1 2 Pan American Union (1902). Coffee: extensive information and statistics (Public domain ed.). Govt. Print. Off.. pp. 24–. https://books.google.co.jp/books?id=yvYaAAAAYAAJ&pg=PA21&redir_esc=y&hl=ja 2011年11月16日閲覧。
↑ Graham, Harry Crusen (1912). Coffee: Production, trade, and consumption by countries. Govt. print. off.. pp. 36–. https://books.google.co.jp/books?id=Evbp7CWh0EEC&pg=PA36&redir_esc=y&hl=ja 2011年11月17日閲覧。