Question

哪位大侠能给我以下英文文献，我实在是查不到。

Answer 1

都没名字谁能帮你找？

追问

3、Cunha Fernandes, J. S., and Franzon, J. F. (1997). Thirty years of genetic progress in maize(Zea mays L.) in a tropical environment. Maydica 42,21–27.
4、Duvick, D. N., Smith, J. S. C., and Cooper, M. (2004b). Long-term selection in a commercialhybrid maize breeding program. In “Plant Breeding Reviews” (J. Janick, Ed.), Vol. 24,pp. 109–151. Wiley, New York.

追答

可以搞定
需要扣1648698194

Answer 2

哪些英文文献？

追问

不好意思，1、Russell, W. A. (1991). Genetic improvement of maize yields. Adv. Agron. 46, 245–298.
2、Cardwell, V. B. (1982). Fifty years of Minnesota corn production: Sources of yield increase.Agron. J. 74, 984–990.

追答

额 这个有难度