TY  - BOOK
AU  - Whitehead,Alfred North,1861-1947
TI  - An Introduction to Mathematics
PY  - 2012///
PB  - Project Gutenberg
N1  - Project Gutenberg; Freely available; Electronic text
UR  - http://www.gutenberg.org/etext/41568
UR  - http://www.gutenberg.org/license
ER  -