These results are PRELIMINARY.  Please reference
the paper by John Hobbs entitled "Beyond the Standard Model:
New Particle Searches at D0", to be published in the Proceedings of the
XXXIInd Recontres de Moriond: Electroweak Interactions and Unified Theories.
Refined analysis procedures are being developed and further results expected 
shortly.


First generation scalar leptoquarks, beta =1.0

    M_lq(GeV)                95% CL cross section limits(pb)

     40                         73.200
     60                          4.680
     80                          1.280
    100                          0.650
    120                          0.452
    130                          0.409
    140                          0.370
    150                          0.342
    160                          0.284
    180                          0.267
    200                          0.236
    250                          0.215

First generation scalar leptoquarks, beta=0.5

    M_lq(GeV)            95% CL cross section (pb)

    60                     14.60
    80                      4.15
    100                     1.77
    120                     1.16
    140                     0.87
    160                     0.68
    200                     0.54

any generation scalar leptoquarks, beta=0.0
    
  M_lq(GeV)            95% CL cross section (pb)

    50                        199.
    60                        67.0
    80                        32.4
    100                       18.6
    120                       15.8
    140                       11.9
    160                       11.7
    200                       11.35

second generation scalar leptoquarks, beta = 1.0

    M_lq(GeV)                95% CL cross section limits(pb)


      80                             1.24 
     100                             0.85
     120                             0.51 
     140                             0.45 
     160                             0.39 
     180                             0.32 
     200                             0.30 
     220                             0.27 
     240                             0.26 
     260                             0.25

third generation charge 1/3 leptoquarks (beta=1.0 if M(LQ)<M(top))

  M_lq(GeV)            95% CL cross section (pb)
   
      50                        150
      60                         67
      80                         25
     100                         15
     150                          8