Canadian seismograph operations - 1987
By:  P.S. Munro ... [et al.].
Contributors: Geological Survey of Canada.; Canada. Energy, Mines and Resources Canada.
Series: Geological Survey of Canada paper -- 88-25, no. 99
Publisher: Canadian Government Publishing Centre, Supply and Services Canada; Geological Survey of Canada
Published: 1990
Place of publication: Ottawa
Language: mul
Number of pages: 186
Notes: Text in English and French.