TY  - BOOK
AU  - Geyl, Pieter 
AU  - Toynbee, Arnold J.
AU  - Sorokin, Pitirim A.
TI  - Pattern of the past: can we determine it?
U1  - R 
PY  - 1949///
CY  - Boston
PB  - Beacon
N1  - Includes index
ER  -