TY  - BOOK
AU  - Zwicky, Fritz
AU  - Herzog, E.
AU  - Wild, D.
TI  - Catalogue of galaxies and of clusters of galaxies: vol. 4, covering the palomar survey fields of the declination zones +60degrees, +66degrees, +72degrees, +78degrees, +84degrees, +90degrees
PY  - 1968///
CY  - California
PB  - California Institute of Technology
ER  -