2.22 Overview to MARC Conversion Preferences

In some cases, NLM now uses a different MARC bib record format internally from the format it uses to distribute records to OCLC. If you choose to acquire records directly from NLM using a feature of NLM LOCATORplus, you will then have records in this non-standard format. CyberTools provides a utility to convert these records to the standard format.

The utility allows you to specify which of four types of conversions to perform:

1. Convert separate 650 age group, pregnancy tags to $x subfields on 650s.

If there are one or more 650 22 tags containing one of a short list of age terms or "Pregnancy" as a subfield, the terms will be added in x subfields to all the 650 MeSH tags with "$9 a" NLM markers, multiplying them as necessary to keep one x subfield per tag. The 650 22 tags will be eliminated. See example below.

2. Convert 651 _2 $a geographic to $z in all 650s.

If there is exactly one 651 _2, the Geographic term in the a subfield will be applied to all 650 MeSH tags as z subfields and the 651 tag will be eliminated.

3. Convert Form PTs in 655 _7 tags to $v subfields on 650s.

If there is exactly one 655 _7, the Form PT term in a subfield will be applied to all 650 MeSH tags as v subfields and the 655 tag will be eliminated. The term identified must be one of a list of Publication Types that NLM considers a form.

4. Convert Genre PTs in 659 _7 tags to 655 _7 tags.

This option converts 659 _7 tags (with "mesh" as the content of subfield 2) to 655 _7 tags. These are Publications Types that NLM considers genres.

For further discussion of these formats and their conversion you can read the CyberTools document "MeSH 1999 Update" (which follows) and NLM's "Application of MeSH for Medical Catalogers" (http://www.nlm.nih.gov/tsd/cataloging/mainpge.html).

When you use MARCout you will be given the opportunity to specify which conversions to perform, and to save and reuse the list of preferences that you have specified. Below are some examples of the use of MARCout.

Let's look at a MARC bib for an example for 1999 publication, Manual of pediatric critical care, prior to the conversion:

 000  01194pam  2200397 a 4500 
 001  854997 
 005  19990503164514.0 
 008  981015s1999    moua|||  bf|| 001|0|eng b 
 010  $a 98-47493 
 020  $a 0815142307 
 035  $9 9817645 
 040  $a DNLM $c DNLM 
 041  09 $a eng 
 044  $9 United States 
 060  00 $a 1999 C-321 
 060  10 $a WY 49 $b H429m 1999 
 100  1# $a Hazinski, Mary Fran.  
 245  10 $a Manual of pediatric critical care / $c Mary Fran 
     Hazinski.  
 246  30 $a Pediatric critical care 
 260  ## $a St. Louis : $b Mosby, $c c1999.  
 300  $a xii, 688 p. : $b ill.  
 500  $a "This manual developed as a condensed revision of the 
     second  edition of Nursing care of the critically ill 
     child."--Pref.  
 504  $a Includes bibliographical references and index.  
 650  12 $a Critical Care $9 a 
 650  12 $a Nursing Care $9 a 
 650  22 $a Infant 
 650  22 $a Child 
 655  #7 $a Handbooks $2 mesh 
 730  0# $a Nursing care of the critically ill child.

Here is the same bib after the conversion:

000 01194pam 2200397 a 4500

001 854997 005 20001122163254.0 008 981015s1999 moua||| bf|| 001|0|eng b 010 $a 98-47493 020 $a 0815142307 035 $9 9817645 040 $a DNLM $c DNLM 041 09 $a eng 044 $9 United States 060 10 $a WY 49 $b H429m 1999 100 1# $a Hazinski, Mary Fran. 245 10 $a Manual of pediatric critical care / $c Mary Fran Hazinski. 246 30 $a Pediatric critical care 260 ## $a St. Louis : $b Mosby, $c c1999. 300 $a xii, 688 p. : $b ill. 500 $a "This manual developed as a condensed revision of the second edition of Nursing care of the critically ill child."--Pref. 504 $a Includes bibliographical references and index. 650 12 $a Critical Care $x Infant $v Handbooks 650 12 $a Nursing Care $x Infant $v Handbooks 650 12 $a Critical Care $x Child $v Handbooks 650 12 $a Nursing Care $x Child $v Handbooks 730 0# $a Nursing care of the critically ill child.