In 1933, ____________ showed the existence of relationship between soil water content and degree of dry density.

In 1933, ____________ showed the existence of relationship between so

1.	In 1933, ____________ showed the existence of relationship between soil water content and degree of dry density.
A.	Terzaghi
B.	Skempton
C.	Darcy
D.	Proctor
Answer» E.