00611naa a2200133 a 450000100080000000500110000800800410001910000170006024500760007726000090015352002350016270000210039777300590041816497502000-12-04       1977    bl ---       0--  u    #d1 aBROWN, G. R.  aA tool and method for extracting plant-root-soil cores on remote sites.  c1977  aA portable, man-operated tool for extracting intact cores of soil, roots, and above-ground plant parts on sites inacessible to motor vehicles car be onstructed for less than $125.00. Two men can extract up to 125 cores in 4 hours.1 aTHILENIUS, J. F.  tJournal of Range Managementgv.30, n.1, p.72-74, 1977.