Pammel Louis Herman

A Comparative Study Of The Vegetation Of Swamp, Clay, And Sandstone Areas In Western Wisconsin, Southeastern Minnesota, Northeastern, Central, And Sou

Flower Ecology

Ecology

Flower Ecology

The Russian Thistle

The Grasses Of Iowa, Volume 1, Part 2

Ecology

The Russian Thistle

The Grasses Of Iowa, Volume 1, Part 2

Notes On The Grasses And Forage Plants Of Iowa, Nebraska, And Colorado, Volumes 1-10

A Comparative Study Of The Vegetation Of Swamp, Clay, And Sandstone Areas In Western Wisconsin, Southeastern Minnesota, Northeastern, Central, And Sou

A Lecture On Pollination Of Flowers

A Comparative Study Of The Vegetation Of Swamp, Clay, And Sandstone Areas In Western Wisconsin, Southeastern Minnesota, Northeastern, Central, And Southeastern Iowa

Proceedings Of The Iowa Park And Forestry Association: First Annual Meeting, Des Moines, 1901...

The Russian Thistle...

Notes On The Grasses And Forage Plants Of Iowa, Nebraska, And Colorado, Volumes 1-10

Weeds Of The Farm And Garden

Iowa Parks