TY  - JA
AU  - Nelson,R.R.
TI  - Disease resistance breakthrough resistance not black and white, but various shades of gray [Genetics]
SN  - 0162-5098
U1  - 82-813350 
PY  - 1981///
KW  - Diseases general
KW  - Plant diseases
KW  - AGROVOC
KW  - Plant breeding
N1  - ill
T2  - Crops and Soils Magazine
ER  -