Use this field to indicate the existence of a microfilm or other surrogate copy available.
indicators: 1st 0 Private [do not use]
1 Not private
2nd # Undefined
subfields: $$a - Terms governing use and reproduction
$$5 - Institution to which field applies
$$a Terms governing use and reproduction
...
$$a Restricted: use microfilm on file (88-321). $$5 hou
$$a Restricted: use facsimile MS Typ 321.1. $$5 hou
$$a Microfilm on file (67-341). $$the