00668cam a2200205 4500 91747230 TxAuBib 20061207120000.0 001001s2000||||||||||||||||||||||||eng|u 2355 Project Gutenberg PGUSA eng TxAuBib Darwin, Charles. The formation of vegetable mould through the action of worms, with observations on their habits [Gutenberg] / by Charles, 1809-1882 Darwin. Project Gutenberg, 2000. Project Gutenberg. Freely available. Electronic text. Earthworms. http://www.gutenberg.org/license Rights TXTLL