The ecol operation
Subtitle: ecology & building & common sense
By: by Alvaro  Ortega...[et al.].
Contributors: Ortega, Alvaro.; McGill University. School of Architecture. Minimum Cost Housing  Group.
Edition: Rev. ed.
Series: The problem is -- no.2
Publisher: McGill University, School of Architecture, Minimum Cost  Housing Group
Published: 1975
Place of publication: Montreal
Language: eng
Number of pages: 128
Notes: First published 1972.