books.google.com - With an estimated 35,000 species, terrestrial molluscs are one of the most successful and diverse animal groups in land-based ecosystems. These animals have long been of importance to human societies as food, medicine, crop pests, vectors of parasites, and as tools, personal ornamentation and currency...http://books.google.com/books/about/The_biology_of_terrestrial_molluscs_elec.html?id=WlvX-9Wt0toC&utm_source=gb-gplus-shareThe biology of terrestrial molluscs [electronic resource]![The biology of terrestrial molluscs [electronic resource]](http://books.google.com/books?id=WlvX-9Wt0toC&printsec=frontcover&img=1&zoom=1&edge=curl&imgtk=AFLRE70vXN6sUIR9mbRQNqNQ42gROSWdkcCnyUD8gu8ffL5lDyv3gfyYLfyJOZuItzpkonZ_lFShEw7p4pZ-u3VLvhRwXLmnPQKua8u4j7CtyvfRTCp2og7rxB8ixAsaZ1IzrT2mNgk3 "The biology of terrestrial molluscs [electronic resource]")
