The Black Death

In processing The Black Death (from the "Pivotal Moments in History" series) by Diane Zahler (082259076X) for MVHS, I noticed that there is a mix of call numbers currently being used for The Black Death. Understandably, books may differ in emphasis from more scientific to more historical. Nonetheless, I figured it's a good topic to look into. Here are the numbers that are currently being used:

• 362.1969 = 362 Social welfare problems and services + .1 Physical illness + .19 Services to patients with specific conditions + .196 Specific conditions + .1969 Other diseases
• 614.45732 = 614.4 Incidence of and public measures to prevent specific diseases and kinds + .45 = Patient isolation + ?
• 614.4/9/4 = 614.4 Incidence of and public measures to prevent specific diseases and kinds + .49 History of epidemics + 614.494 Europe
• 614.5/732 = 614.5 Incidence and public measures to prevent specific disease and kinds of diseases + 614.57 Bacterial diseases + .573 Bacterial diseases + .923 Pasteurella infections, yersinia infections, chlamydia infections, tularemia + .5732 Plague
• 616.9232 = 616 Diseases + .9 Other Diseases + .92 Bacterial diseases + .923 Pasteurella infections, yersinia infections, chlamydia infections, tularemia + .9232 Plague
• 940.14 = 940 History of Europe + .1 Early history to 1453 + .14 Age of feudalism, 800-1099
• 940.1/92 = 940 History of Europe + .1 Early history to 1453 + .19 1300-1453 + .192 1300-1399 (Including period of Black Death)
• 942.038 = 942 England and Wales + .03 Period of House of Plantagenet, 1154-1399 + .038 Reign of Richard II, 1377-1399

Yet again, every book may have a specific slant that explains placement in one number over another. It just seems like many of them may have enough in common to be grouped more closely together. 940.192 makes a lot of sense for a historical number since it specifically includes the period of Black Death. These other numbers also seem very valid: 614.494 614.5732, and 616.9262! I think any of these 4 could be good matches and so I guess I'll stick to the recommended number for the book: 614.5732. This may be a good area for people to check in their own collections, though.