Unclassified document AECU (series). 1347. Contributions to chemistry of vic-dioximes: 11, Infrared spectrophotometric study of nature of hydrogen bond in 1,2-bis (ric dioximo A, .V) nickel (II) compounds [with list of literature cited]; by Roger C. Voter, Charles V. Banks, Velmer A. Fassel, Paul W. Kehres.