What is written in the tablets found during excavations of the most ancient Greek cities?

Some of the oldest written sources found during excavations of ancient cities in Greece date back to the 15-10th century BC. During this period, the Mycenaean culture flourished in Greece. Most often, the tablets found described clerical reports, military operations, and some also contained lists of workers, artisans, slaves and warriors. In addition, the tablets also described trade transactions, property, etc.