TY  - BOOK
AU  - Staack,J.G.
TI  - Spirit leveling in Massachusetts, 1922-35
T2  - U. S. Geological survey. Bulletin 882
AV  - QE75 .B9 no. 882
PY  - 1937///
CY  - Washington
PB  - U.S. Govt. print. off.
KW  - Massachusetts
KW  - Altitudes
N1  - At head of title: United States Department of the interior; Includes index
ER  -