00450nam a2200121 a 450000100080000000500110000800800410001910000190006024501710007926000160025030000100026650000520027614657592003-10-27       1972    bl uuuu  m   00u1 u    #d1 aRUSCHEL, A. P.  aStudy of certain factors influencing Rhizobium - Phaseoli vulgaris L. symbiosis and effect of plant age upon Rhizobium japonicum - Glycine max (L.) Merrill symbiosis.  a1972.c1972  a63 f.  aThesis (Master of Science) - Purdue University.