TWENHOFEL, W. H.
Principles of sedimentation.
TWENHOFEL, W. H. Principles of sedimentation. © 28Oct39; A135178. William S. Twenhofel, Lillian T. Pfeiffer & Helen T. Close (C); 10Jul67; R415277.
William S. Twenhofel, Lillian T. Pfeiffer & Helen T. Close|C