TY  - BOOK
AU  - Lekkerkerker, C.G.
TI  - Geometry of numbers
T2  - Biblotheca Mathematica
SN  - 7204 2108 X
U1  - 512.5 
PY  - 1969///
CY  - Groningen
PB  - Wolters-Noordhoff Publishing
ER  -