1 Subjects: “...factorial surveys...”

2 Subjects: “...survey...”

3 Subjects: “..., surveying and building::TNC Structural engineering::TNCC Soil and rock mechanics...”

4 Subjects: “...vegetation survey...”

5 Subjects: “...drone survey...”

6 Subjects: “...drone survey...”

7 “... on over 100 interviews, an original survey, and official government data, this book focuses...”