What is a DHI record?

LDR 00852nam a2200253Ia 4500
001 009533447
003 MiAaHDL
005 20110222000000.0
006 m d
007 cr bn ---auaua
008 970305s1979 wiu s000 0 eng d
035 ‡asdr-wu8426861
035 ‡a(OCoLC)36489075
040 ‡aGZW ‡cGZW ‡dGZM
086 ‡aUNI 1 AGR.3/2:A2416/1979 ‡2widocs
100 1 ‡aSendelbach, A. G.
245 1 0 ‡aWhat is a DHI record? / ‡cA.G. Sendelbach.
260 ‡a[Madison, Wis.] : ‡bUniversity of Wisconsin--Extension, ‡c1979.
300 ‡a[2] p. ; ‡c28 cm.
490 0 ‡aUniversity of Wisconsin--Extension. Cooperative Extension ; ‡vA2416
500 ‡a"May 1979"
500 ‡aCaption title.
538 ‡aMode of access: Internet.
650 0 ‡aMilk ‡xAnalysis.
650 0 ‡aCow testing.
710 2 ‡aUniversity of Wisconsin--Extension. ‡bCooperative Extension Programs.
CID ‡a009533447
DAT 0 ‡a20110221120800.0 ‡b20110222000000.0
DAT 1 ‡a20120815145101.0 ‡b2022-06-05T18:44:56Z
CAT ‡aSDR-WU ‡dUNKNOWN ‡lloader.pl-001-001
FMT ‡aBK
HOL ‡0sdr-wu8426861 ‡awu ‡bSDR ‡cWU ‡pwu.89101584787 ‡sWU ‡18426861
974 ‡bWU ‡cWU ‡d20220605 ‡sgoogle ‡uwu.89101584787 ‡y1979 ‡ric ‡qbib ‡tUS bib date1 >= 1929