American Rose Annual 28: 139-140 (1943) Getting Rid of Blues and Thorns DR. NIELS E. HANSEN State College, Brookings, South Dakota
Prof. Niels E. Hansen and Zitkala Rose Prof. Hansen is working for thornless roses that are hardy and do not "blue."
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American Rose Annual 28: 139-140 (1943)
Getting Rid of Blues and Thorns
DR. NIELS E. HANSEN
State College, Brookings, South Dakota
Prof. Niels E. Hansen and Zitkala Rose
Prof. Hansen is working for thornless roses that are hardy and do not "blue."