TY  - BOOK
AU  - Rohlfs,K.(Kristen),1930-
TI  - Lectures on density wave theory
SN  - 0387084487
PY  - 1977///
CY  - Berlin
PB  - Springer-Verlag
KW  - Density wave theory
KW  - Galaxies
N1  - Includes bibliographies and index
ER  -