Guidelines for Recording Holdings: Compression

A compressed holdings statement records the first and last parts of range when there is no gap in the holdings.
Repeat captions according to guidelines.
Compress the holdings at the highest levels of enumeration and chronology whenever possible.
- If the number of parts per volume is the same, compress at the highest level
```
	v.1:no.1(1976:Jan.)-v.2:no.12(1977:Dec.)
becomes v.1(1976)-v.2(1977)

        v.1:pt.1-4  v.2:pt.1-4  v.3:pt.1-4
becomes v.1-3
      
```
- If the number of parts per volume differs, do not compress at the highest level. Separate each element by a blank space.
```
      v.1-2  v.2A  v.3-4  v.4A  v.5
not   v.1-5
      
```
- When there are gaps in holdings, compress those holdings which are complete
```
v.1:no.1(1976:Jan.)-v.1:no.4(1976:Apr.),
v.1:no.6(1976:June)-v.1:no.12(1976:Dec.)

v.1-4,v.6-8
      
```

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