ID:DA08269575
同姓同名の著者を検索
John A. Gray
World Bank c2002 World Bank technical paper no. 522 . Forests series
所蔵館14館
Mikael Grut, John A. Gray, and Nicolas Egli
World Bank c1991 World Bank technical paper , World Bank technical paper Africa Technical Department series
所蔵館1館
Canadian Government Pub. Centre c1981