The Japan Gas Association

gas jpWDCGG collects, archives and distributes data provided by contributors on greenhouse gases (such as CO 2 , CH 4 , CFCs, N 2 O) and related gases (such asWDCGG collects, archives and distributes data provided by contributors on greenhouse gases (such as CO 2 , CH 4 , CFCs, N 2 O) and related gases (such as