一般注記Papers.
"The IAHR World Congress, held every two years, (...) The congress offers technical programmes, seminars, technical workshops, (...)" -- v. 1, next page of information.
"Previous events in this congress series have been referred to as the IAHR Biennial Congress. This congress is the first to be officially named the World Congress, (...)" -- v. 1, next page of information.
"The National Hydology and Water Resources Symposium (...) the event is usually held every 18 months." -- v. 1, next page of information.
"The National Conference on Hydraulics in Water Engineering (...) is usually held every three years." -- v. 1, next page of information.
書誌注記Includes bibliographical references and indexes.