00625cam a2200181 4500 100361288 TxAuBib 20070420120000.0 110827s2011||||||||||||||||||||||||eng|u 37224 Project Gutenberg PGUSA eng TxAuBib Bernstein, Aaron David. Popular Books on Natural Science For Practical Use in Every Household, for Readers of All Classes [Gutenberg] / by Aaron David Bernstein. Project Gutenberg, 2011. Project Gutenberg. Freely available. Electronic text. http://www.gutenberg.org/license Rights