# EPC Exhibit 132A-9

```EPC Exhibit 137-7.3
March 21, 2014
THE LIBRARY OF CONGRESS
Dewey Section
To:
Jonathan Furner, Chair
Decimal Classification Editorial Policy Committee
Cc:
Members of the Decimal Classification Editorial Policy Committee
Karl E. Debus-L&oacute;pez, Chief, U.S. Programs, Law, and Literature Division
From: Michael Panzer, Editor in Chief
Winton E. Matthews, Consulting Assistant Editor
Dewey Decimal Classification
OCLC Online Computer Library Center, Inc.
Re:
The current rule of what a base number in an add note is:
6.2 Parts of the add note
Add notes must always give the base number, the exact span of numbers to be
added to it, and one or more examples that can be found in the pattern span.
6.2.1
Base number
The base number is the number of which one or more subdivisions (zero or
non-zero) are developed by use of an add note.
1
The problem is how to determine what consists of the base number, especially when it
could end in zero. Consider the following three examples given in Rule 6.4.1.
333.314-.319
Land reform in specific continents, countries, localities of
modern world
Add to base number 333.31 notation 4-9 from Table 2, e.g.,
land reform in Latin America 333.318
363.107–.108
Measures to prevent, protect against, limit effects of problems;
remedial measures, services, forms of assistance
Add to base number 363.10 notation 7–8 from table under
362–363, e.g., alarm and warning systems 363.1072,
counseling 363.1086
025.46001-.46999
*Specific subjects
Add to base number 025.46 notation 001-999, e.g.,
classification of education 025.4637
In each case, the base number consists of the digits that are common to any number
constructed using the adding note. In the second example, the base number ends in 0
because 363.10 is common to all of the numbers constructed using the adding note.
We recommend that Rule 6.2.1 be modified as follows.
6.2.1
Base number
The base number is the number of which one or more subdivisions (zero or
non-zero) are developed by use of an add note. The base number consists of
the digits, including a zero at the end of the number, that are common to any
number constructed using the add note.
2
```