Robuta

https://www.nps.gov/subjects/geology/physiographic-provinces.htm
national park servicephysiographic provincesgeologyu
https://www.usgs.gov/publications/geologic-and-physiographic-controls-bed-material-yield-transport-and-channel
The rivers of western Oregon have diverse forms and characteristics, with channel substrates ranging from continuous alluvial gravel to bare bedrock. Analysis...
geologicphysiographiccontrolsbedmaterial
https://www.usgs.gov/publications/ground-water-hydrology-and-quality-valley-and-ridge-and-blue-ridge-physiographic
No abstract available.
ground watervalley ridgehydrologyquality
https://www.abebooks.com/first-edition/Duab-Turkestan-physiographic-sketch-account-travels/31937797547/bd
1st Edition - University Press, Cambridge - 1913 - First edition, large 8vo, pp. xv, [1], 563, [1]; 2 folding maps at the back, frontispiece, and 201...
duabturkestanphysiographicsketchaccount