David Letson is on CollEc

rank value
closeness 19066 5.44506
betweenness 20329 0.162841

co-authors

  1. Daniel Solis [pso136]
  2. B McCullough [pmc128]
  3. Marc Ribaudo [pri284]
  4. Jim Hansen [pha614]
  5. David Kelly [pke98]