Slave serial number

1850: Both samples
1860: All three samples

All persons.

SERIAL is an identifying number, unique to each slave holding in the sample. All slaves in a given holding are assigned the same serial number. (Slave records also have their own unique identifiers -- see SLAVENUM.) A combination of YEAR, DATANUM, and SERIAL provides a unique identifier for every slave holding in the Slave samples; YEAR, DATANUM, SERIAL, and PERNUM uniquely identify every individual in the database.


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