TY  - BOOK
AU  - Campbell N. R.
TI  - Foundations of Science
PY  - 1957///
CY  - New York
PB  - DP
KW  - 1 Ð¤ÑÐ»Ð¾ÑÐ¾ÑÑÑÐºÑ Ð½Ð°ÑÐºÐ¸
KW  - UDC
ER  -