Vol. 4 is by Arnold Pronto, Michael Wood.
v. 1-2. Treaties
v. 3 Final draft articles not yet having resulted in the conclusion of a treaty and reports other than final draft articles
v. 4. Treaties, final draft articles, and other materials.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
The International Law Commission, 1949-1998 by Arthur Watts. ISBN 9780199578979. Published by Oxford University Press in 1999. Publication and catalogue information, links to buy online and reader comments.
