1 Subjects: “...crude oil prices...”

2 Subjects: “...E. coli crude extract preparation...”

3 Subjects: “...Western Canadian Select (condensate mixed with synthetic crude/bitumen-dilsynbit)...”

4 Subjects: “...crude oil prices...”

5 Subjects: “...water-in-crude oil emulsion...”

6 Subjects: “...crude oil pipeline...”

7 Subjects: “...reduced crude protein...”

8 Subjects: “...crude price...”

9 Subjects: “...crude oil price...”

10 Subjects: “...crude oil refining...”

11 Subjects: “...crude oil...”

12 “... political discourse that relies on threats and the use of violence, the crude re-racialization of numerous...”

13 “...Climate change, urban air quality, and dependency on crude oil are important societal challenges...”

14 “... contaminants (e.g., crude oil, tungsten, copper, and polycyclic aromatic hydrocarbons) are discussed...”