publisher: D. Reidel
publish date: September 30th 1980
format: hardcover pages: 212
language: English
ISBN:
9027711550 (9789027711557)
publisher: Turtleback Books
language: English
ISBN:
1417642483 (9781417642489)
publisher: UNESCO
format: hardcover
language: English
ISBN:
9231087711 (9789231087714)
publisher: UNESCO
format: hardcover
language: English
ISBN:
9231031104 (9789231031106)