TY  - BOOK
AU  - Planck,Max
AU  - Clarke,H.T.
AU  - Silberstein,L.
TI  - The Origin and Development of the Quantum Theory
PY  - 2010///
PB  - Project Gutenberg
N1  - Public domain in the USA; Electronic text
UR  - http://www.gutenberg.org/ebooks/33663
ER  -