1.   Incomplete historical records have made the investigation more difficult.

2.   Besides leaving incomplete records, the Wrights employed tools, methods and materials that have long since fallen out of use.

3.   Aetna says that incomplete records forbid its knowing how many such policies were written.

4.   But because the beekeepers could not understand English, failed to realize what was at stake or had incomplete records, they did not respond to the forms.

5.   For its part, FleetBoston contends that incomplete records make a conclusion impossible.

6.   It is based on numerous public sources and on an incomplete historical record.

7.   They base this on a variety of incomplete records and unconfirmed reports.

8.   Two weeks later, a health department inspection revealed dirty and unsafe surgical instruments, inadequately trained personnel and incomplete patient records.

9.   Determined to track down the man for whom Tiger Woods was named, Callahan was thwarted by faulty memories, uncooperative government officials and incomplete official records.

10.   Incomplete records and the prevalence of conversions, voluntary and forced, make it impossible to say for certain.