From the reviews:

'Theory of Stein Spaces provides a rich variety of methods, results, and motivations - a book with masterful mathematical care and judgement. It is a pleasure to have this fundamental material now readily accessible to any serious mathematician.' J. Eells in Bulletin of the London Mathematical Society (1980)

'Written by two mathematicians who played a crucial role in the development of the modern theory of several complex variables, this is an important book.' J.B. Cooper in Internationale Mathematische Nachrichten (1979)