Vertical Reference Systems
by Hermann Drewes, Alan H. Dodson, L. P. S. Fortes, Laura Sanchez, Pedro Sandoval
GeodesySurveying
Writing a summary for young readers…
For young readers
Book data: Open Library
by Hermann Drewes, Alan H. Dodson, L. P. S. Fortes, Laura Sanchez, Pedro Sandoval
Book data: Open Library