Iowa departmental rules: irregular, 1952-1975, publ. by the State of Iowa, n.p., n.d., (1952-75), all published. The Iowa Departmental Rules was a
series compiled by the Office of the Iowa Code Editor in compliance with Chap. 51 of the 54th Iowa General Assembly. While the original legislative
instructions anticipated that the series would be comprised of a new edition issued in every even-numbered year, the actual publishing history resulted in
hardbound new editions in 1952, 1954, 1958, 1962, 1966, 1971, & 1973; followed by paperback supplements for July 1974, Jan. 1975, and July 1975. The
Iowa Departmental Rules assumed a new form as the Iowa Administrative Code in the mid-1970s.)
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