What is a DHI record ?

LDR 00830mam a2200241 i 4500
001 009532895
003 MiAaHDL
005 20110222000000.0
006 m d
007 cr bn ---auaua
008 760702s1975 wiu s000 0 eng d
035 ‡asdr-wu2429780
035 ‡a(OCoLC)2294847
040 ‡aWHi ‡cGZW ‡dGZW ‡dm/c ‡dOCL ‡dWIX
100 1 ‡aSendelbach, A. G.
245 1 0 ‡aWhat is a DHI record ? / ‡cA. G. Sendelbach.
250 ‡aRev.
260 ‡aMadison, Wis. : ‡bCooperative Extension Programs, ‡c1975.
300 ‡a[4] p. ; ‡c28 cm.
490 0 ‡a[Publication - Dept. of Agricultural Journalism] ; A2416
500 ‡a(Uni 1 Agr.3/2:A2416)
538 ‡aMode of access: Internet.
650 0 ‡aMilk ‡xAnalysis and examination.
650 0 ‡aCow testing.
710 2 0 ‡aUniversity of Wisconsin--Extension. ‡bCooperative Extension Programs.
710 2 0 ‡aUniversity of Wisconsin--Madison. ‡bDept. of Agricultural Journalism. ‡w1n
CID ‡a009532895
DAT 0 ‡a20110221120800.0 ‡b20110222000000.0
DAT 1 ‡a20120815145101.0 ‡b2023-08-02T18:30:57Z
DAT 2 ‡a2023-08-02T17:30:01Z ‡b2023-03-18T20:00:02Z
CAT ‡aSDR-WU ‡dUNKNOWN ‡lloader.pl-001-001
FMT ‡aBK
HOL ‡0sdr-wu2429780 ‡awu ‡bSDR ‡cWU ‡pwu.89101584761 ‡sWU ‡12429780
974 ‡bWU ‡cWU ‡d20230802 ‡sgoogle ‡uwu.89101584761 ‡y1975 ‡rpdus ‡qncn