TY  - JA
AU  - Putt,E.D.
AU  - Sackston,W.E.
TI  - Resistance of inbred lines and hybrids of sunflowers (Helianthus annuus L.) in a natural epidemic of aster yellows
SN  - No (Revis
PY  - 1960///
N1  - Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0008-4220
T2  - Canadian Journal of Plant Science
ER  -