Data Search of Major Classification
| Major Class | Parent | Descriptor | Acronym | Synonym | Chinese Descriptor | Spanish Descriptor | Reference | Definition | 
| Process | Steam Assisted Gravity Drainage | SAGD | Vapor de agua de drenaje por gravedad asistida | 
| Major Class | Parent | Descriptor | Acronym | Synonym | Chinese Descriptor | Spanish Descriptor | Reference | Definition | 
| None defined at this time . . . | ||||||||