Ritchey, J. D., & Rumbaugh, J. O. (1996). Subsurface Fluid-Flow (Ground Water and Vadose Zone) Modeling. ASTM Special Technical Publication.
Tohutoru Kātū Chicago (17th ed.)Ritchey, Joseph D., me James O. Rumbaugh. Subsurface Fluid-Flow (Ground Water and Vadose Zone) Modeling. USA: ASTM Special Technical Publication, 1996.
Tohutoro MLA (9th ed.)Ritchey, Joseph D., me James O. Rumbaugh. Subsurface Fluid-Flow (Ground Water and Vadose Zone) Modeling. ASTM Special Technical Publication, 1996.
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