TY  - BOOK
AU  - Douglas,Mary
AU  - دوغلاس، ماري
TI  - Natural symbols: explorations in cosmology 
T2  - Vintage books (Vintage Books, St. Paul)
SN  - 0-394-71942-5
U1  - 113 21E
PY  - 1973///
CY  - St. Paul
PB  - Vintage Books
N1  - Index. - Fonds Hart; Bibliogr. p. 202-208
ER  -