00685cam a2200157 a 4500020001500000040000800015082002600023100002200049245004500071260007600116300003200192500022000224650001100444650001100455710006100466  a9251022143  cCtY  a634 FOO 1985 A053 Or.1 aThielges, Bart A.10aBreeding poplars for disease resistance.0 aRome :bFood and Agriculture Organization of the United Nations,c1985.  avi, 66 p. :bill. ;c30 cm.  a"This paper, prepared ... by Professor B.A. Thielges ... was presented as a background paper to the ad hoc Committee on Poplar Breeding during the 17th Session of the IPC at Ottawa, Canada, in October 1984"--P. iii. 0aPoplar 0aPoplar2 aFood and Agriculture Organization of the United Nations.