[PDF][PDF] i JOURNAL OF ECONOMIC ISSUES J 卧Pol. XVIII No. 1 March J984

FG Hayden - 2001 - researchgate.net
We all have a great stake in agricultural policy because we all consume food, but also
because of other equally important considerations such as the connections between soil and …

[图书][B] 袁隆平口述自传ORAL AUTOBIOGRAPHY OF YUAN LONGPING

袁隆平, 辛业芸 - 2014 - books.google.com
… , in particular his scientific perspective, penetrating insight and … have abandoned their
back-breaking toil on farmland to start … was the fact that the average wheat yield reached 7.5t/ha in …