1-4 of 4 Books
Soil survey, Scott County, Minnesota
Soil survey, Scott County, Minnesota
By Grenfell Frederick Harms,Joseph Francis Cummins

Soil classification for soil survey
By B. E. Butler

Quantitative and numerical methods in soil classification and survey
By R. Webster
La Géophysique et les propriétés physiques des roches
La Géophysique et les propriétés physiques des roches
By Maurice K. Séguin