Success of rooting from stem cuttings of 14 Douglas-fir ((Mirb.) Franco) clones increased significantly from 42% in 1974 to 67% in 1981. The increase was s... DL Copes - 《Canadian Journal of Forest Research》 被引量: 34发表: 1983年 EFFECTS OF ANNUAL CROWN PRUNING AND SERIAL PROPAGATI...
a5% of the people of the UK come from countries such as India and Pakistan. Most people in the UK speak English, but in Wales some people speak Welsh and in Scotland thousands of people speak their local language.[translate] a如何为自己做事情 How handles the matter for oneself[translate]...