TY  - BOOK
AU  - Pelzer H Ed.
AU  -  Niemeier W Ed.
TI  - Precise levelling : contributions to the workshop on precise levelling held at the university of annover Merch
U1  - B28930bH, M4 
PY  - 1984///
CY  - Bonn
PB  - Ummlers Verlag        
KW  - mathematics
ER  -