You have access
Ground-penetrating Radar Accurately Locates Tree Roots in Two Soil Media Under Pavement
Nina Bassuk, Jason Grabosky, Anthony Mucciardi and Gary Raffel
Arboriculture & Urban Forestry (AUF) July 2011, 37 (4) 160-166; DOI: https://doi.org/10.48044/jauf.2011.021