00338    a2200121   4500020001500000082001900015100002100034245004700055260004700102300001900149650002900168650001900197  a0851992412  a633.10421bEGL  aEgli, Dennis B.   aSeed biology and the yield of grain crops   aWallingfordbCAB Internationalc1998g1998  aix,178p.c24cm  aGrain- seeds- physiology  aGrain - yields