TY  - BOOK
AU  - Simpson,Howard E.
TI  - Change in ground water levels in North Dakota,
AV  - QE149 .A23 no. 10
PY  - 1937///
CY  - Grand Forks, N. Dak.
KW  - Groundwater
KW  - North Dakota
N1  - "References": p. 3
ER  -