Subject
- Agriculture -- Economic aspects -- Mathematical models2
- Water resources development -- Northwest, Pacific2
- Farm income -- Northwest, Pacific1
- Feeds -- Economic aspects1
- Feeds -- Northwest, Pacific1
- Oyster culture -- Economic aspects -- Northwest, Pacific1
- Pacific oyster1
- Seafood industry -- Economic aspects -- Northwest, Pacific1
- Seafood industry -- Economic aspects -- Pacific Coast1
- Wheat -- Economic aspects -- Northwest, Pacific1
- Wheat trade -- Northwest, Pacific1
- Winter wheat -- Economic aspects -- Northwest, Pacific1