TY  - BOOK
AU  - Geyl, Pieter
AU  - Sorokin, Pitirim Aleksandrovich
TI  - The pattern of the past: can we determine it? 
AV  - CB 19.T64 P3
PY  - 1968///, c1949
CY  - New York
PB  - Greenwood
KW  - Toynbee, Arnold Joseph,
KW  - Civilización -
KW  - Filosofía
KW  - Historia -
ER  -