TY  - SER
AU  -  Bernstein, Aaron David, 
TI  -  Popular Books on Natural Science : :  
AV  - Q 
PY  - 2011///
PB  -  Project Gutenberg, 
KW  -  Science -- Popular works
N1  -  The weight of the earth -- Velocity -- Nutrition -- Light and distance -- The wonders of astronomy -- Meteorology -- The food proper for man;  Public domain in the USA;  Text
UR  -  http://www.gutenberg.org/ebooks/37224
ER  -