David Letson is on CollEc

rank value
closeness 19526 5.44416
betweenness 20495 0.162528

co-authors

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