TY - BOOK ED - Conference International Radiotelegraph TI - International photovoltaic conference of Washington: 1927 delegation of the United States of America committee on tariffs word count and accounting U1 - 621.31244 PY - 1928/// CY - Washington, D. C. PB - United States Government Printing Office KW - Photovoltaic power generation KW - Solar cells KW - Photovoltaic cells N1 - Report on the history of use of codes and code language, the international telegraph regulations pertaining theretoand the bearing of this history on the cortina report by William F. Friedman ER -