P1073 Based on the author's thesis, Columbia University.
Buy a copy
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Nachman Krochmal : guiding the perplexed of the modern age by Jay M. Harris. ISBN 0814735088. Published by New York University Press in 1991. Publication and catalogue information, links to buy online and reader comments.