00297nam a2200109Ia 450000500170000000800410001708200160005810000160007424500460009026000430013630000080017920260224041010.0260224s9999||||xx |||||||||||||| ||und||  a633.104 EGL  aEgli, D.B.  0aSeed biology and the yield of grain crops  aWallingford : CABI Publications c1998  a178