Take a look at the following call numbers. Are they in the right order? What are the differences between each call number?
PN
197.52
.G59567
B76
1989
PN
197.6
.G59567
B76
1989
PN
197.649
.G59567
B76
1989
PN
197.68
.G59567
B76
1989
Yes. They are in the correct order. The only difference is in the subject number lines.
Now look at the next example. Are the call numbers in the right order? What is the difference between each of the call numbers?
Z
1003.3
.E85
S7613
1999
c.1
ZA
1003.3
.E85
S7613
1999
c.1
ZA
1003.3
.E85
S7613
1999
c.3
These are also in the correct order. The difference between the first call number and the other two is that the first one is subject class Z while the other two are subclass ZA. The difference between the second and the third call numbers is the copy number.
The following example is ordered incorrectly. How should they be ordered?
DA
247.3
.A637
F22
2006
DB
766
.H266
B76
DB
766
.H2556
B76
2003
DB
766
.H2556
B132
2009
DG
247.1
.H502
C821
2000
DC
325.5
.H567
C81
2000
The correct order is as follows:
DA
247.3
.A637
F22
2006
DB
766
.H2556
B132
2009
DB
766
.H2556
B76
2003
DB
766
.H266
B76
DC
325.5
.H567
C81
2000
DG
247.1
.H502
C821
2000