国民経済計算体系（System of National Accounts、SNA、National
Account Systems、NAS）に関する情報を集めている。 国民経済計算体系とは、経済（Economy）のフロー（Flow）とストック（Stock）を体系的に記録したものである。
基礎資料として産業連関表（Input Output Table）も作成される。
The London Group on Environmental Accounting⇒London Group
on Environmental Accounting http://www4.statcan.ca/citygrp/london/london.htm⇒http://unstats.un.org/unsd/envaccounting/londongroup/
『The London Group on Environmental Accounting was created in 1993 to provide an informed forum for
practitioners to share their experience of developing and implementing
environmental satellite accounts linked to the economic accounts
of the System of National Accounts. It convened its first
meeting in March 1994 in London, England. Successive meetings
have been held in Washington, U.S.A. (1995), Stockholm, Sweden
(1996), Ottawa, Canada (1997), Fontevraud, France (1998), Canberra,
Australia (1999) and in Voorburg, Netherlands (2001). Participation
includes representatives from statistical offices and international
organizations. The meetings are hosted voluntarily by participants
one at a time and each has provided facilities and secretarial
functions for the meetings. A Papers and Proceedings volume has
been compiled after each meeting.』
A Japanese NAMEA（不明） http://www5a.biglobe.ne.jp/~NAMEA/.htm
池 俊廣氏による。NAMEA：National Accounting Matrix including Environmental
Accounts(環境勘定を含む国民経済計算マトリックス)。