UNIMARC concise bibliographic format

$a Microform Coded Data Physical Attributes
$a/0 Specific Material Designation
$a/1 Polarity
$a/2 Dimensions
$a/3 Reduction ratio
$a/4-6 Specific reduction ratio
If a value is given, right justify with zero fill. If a single digit is missing, replace by 'u'. If the ratio is unknown, fill with blanks.
$a/7 Colour
$a/8 Emulsion on film
$a/9 Generation
$a/10 Base of film

$a Spheroid (Repeatable)
$b Horizontal Datum (Repeatable)
$c Grid and Referencing System (Repeatable)
$d Overlapping and Referencing System (Repeatable)
A two character code indicating a subsidiary grid or referencing system which extends across the face of the cartographic material.
$e Secondary Grid and Referencing System (Repeatable)
A two character code indicating a subsidiary grid or referencing system which appears in the form of marginal ticks.
$f Vertical Datum (Repeatable)
A two character code used to indicate the vertical datum(s) named on the cartographic material.
$g Unit of Measurement of Heighting (Repeatable)
A two character code indicating the unit of measurement of heighting
$h Contour Interval (Repeatable)
Up to four characters indicating the value of interval of the main contours (i.e. those contours which always appear when applicable) in the unit of measurement given in subfield $g. Up to one decimal place may be recorded, values of more than one decimal place should be rounded up to one. Repeatable for each value when, for example, the value changes with height.
$i Supplementary Contour Interval (Repeatable)
Up to four characters indicating the value of the interval of supplementary contours, i.e. contours used between main contours to increase the topographic expression of the area (e.g. in areas of low relief) or contours whose value is not repeated on the surface of the map. The unit of measurement is that given in subfield $g. Up to one decimal place may be recorded, values of more than one decimal place should be rounded up to one.
$j Unit of Measurement of Bathymetry (Repeatable)
$k Bathymetric Interval (Repeatable)
$l Supplementary Bathymetric Interval (Repeatable)
The oceanographic equivalent of subfields $g to $i. The rules for these subfields apply to subfields $j to $1.

$a Coded Data for Computer Files (Not repeatable)
$a/0 Type of computer file
$a/1 Special Material Designation

$a Antiquarian Coded Data - General (Not repeatable)
$a/0-3 Illustration Codes - Book
$a/4-7 Illustration Codes - Full Page Plates
$a/8 Illustration Code - Technique
$a/9-16 Form of Contents Code
$a/17-18 Literature Code
$a/19 Biography Code
$a/20 Support Material - Book
$a/21 support Material - Plates
$a/22Watermark Code
A one-character code indicating whether the paper contains watermark.
$/23 Printer's Device Code
$a/24 Publisher's Device Code
A one-character code indicating whether the book contains publisher's device.
$a/25 Ornamental Device Code
A one-character code indicating whether the book contains ornamental device.
$a/26-27 Unassigned
These character positions contain blanks.

$a Antiquarian coded data - Copy specific attributes (Not repeatable)
$a/0-2 Binding Material Code
$a/3 Types of Binding Code
$a/4 'Bound with' Code
$a/5 State of Preservation Code - Binding
$a/6-7 State of Preservation Code - Body of the Book
$5 Institution to Which Field Applies (Not repeatable. Mandatory if field present)

0 Title is not significant
1 Title is significant

$a Title Proper (Repeatable)
$b General Material Designation (Repeatable)
$c Title Proper by Another Author (Repeatable)
$d Parallel Title Proper (Repeatable)
$e Other Title Information (Repeatable)
$f First Statement of Responsibility (Repeatable)
$g Subsequent Statement of Responsibility (Repeatable)
$h Number of a Part (Repeatable)
$i Name of a Part (Repeatable)
$v Volume Designation (Not repeatable)
$z Language of Parallel Title Proper (Repeatable)
$5 Institution to Which Field Applies (Not repeatable)

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