- Rare plant inventory and plant community descriptions of the Sweet Grass Hills, Proposed Area of Critical Environmental Concern (PACEC), Toole and Liberty Counties, Montana
- Rare Plant Inventory and Plant Community Descriptions of the Sweet Grass Hills, Proposed Area of Critical Environmental Concern (PACEC), Toole and Liberty Counties, Montana: 1989
- Rare Plant Inventory and Plant Community Descriptions of the Sweet Grass Hills, Proposed Area of Critical Environmental Concern (PACEC), Toole and Liberty Counties, Montana: 1989
- Rare Plant Inventory and Plant Community Descriptions of the Sweet Grass Hills, Proposed Area of Critical Environmental Concern (PACEC), Toole and Lib