Hoboken, N.J.—John Wiley & Sons said late Friday that it has agreed to buy London-based academic journal and book publisher Blackwell Publishing for $1.08 billion in cash and debt. Blackwell Publishing, which was formed in 2000 after the merger of Blackwell Science (founded in 1939) and Blackwell Publishers (founded in 1922), publishes more than 825 journals focusing on the social sciences and humanities. Wiley’s core businesses include scientific, technical and medical journals. The companies expect the transaction to close in early 2007. The deal would mark the latest acquisition by Wiley. In October, the publisher bought Chichester, England-based WhatsonWhen, which publishes a monthly calendar of cultural events throughout the world.