age ~81
from Baltimore, MD
Roger LaSalle is the creator of the "Matrix Thinking" technique and is...
Meet Roger Palmer, he's been diving since 1972. Hear what diving was l...
The Seattle Science Foundation is a not for profit organization dedica...
Introduction by John Russell.; Lecture presented as part of the World ...
Esri Canada pays tribute to Dr. Roger Tomlinson, known as the "Father ...
Half of it.