Assertion: reference ellipsoid | /r/ObjectUse | used in the nad-27
Facets:
Source sentences:
text: Although the reference ellipsoids used in the NAD-27 and NAD-83 are different, ...
text: Although the reference ellipsoids used in the NAD-27 and NAD-83 are different, the changes are slight on large-scale maps (scales will be discussed in greater detail later).