TY - BOOK T1 - Beehives of invention :Edison and his laboratories / DA - 1973. CY - Washington : AU - Davidson, George E., CN - TK140.E3 CN - TK140.E3 PB - Office of Publications, National Park Service : for sale by the Supt. of Docs., U.S. Govt. Print. Off., PP - Washington : PY - 1973. ID - 17282 TI - Beehives of invention :Edison and his laboratories / ER -