ON Business Directory > Thornhill
64 Rodeo Drive
Thornhill, ON (Ontario) L4J4Y3
(905) 707-1957





Additional Categories
Petrah Inc is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:
  • Research & Development Bureaus
  • Research & Development Centers
North American Industry Classification System (NAICS) Categories:
  • Research And Development In The Social Sciences And Humanities
Standard Industry Classification (SIC) Categories:
  • Commercial Economic, Sociological & Educational Research
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