Efficacy on economic benefit of rice planting and duck raising in paddy fields under pollution-free production conditions

›› 2003, Vol. 1 ›› Issue (06): 0-332.

• 论文 •

Efficacy on economic benefit of rice planting and duck raising in paddy fields under pollution-free production conditions

Received:1900-01-01 Revised:1900-01-01 Online:2003-12-11 Published:2003-12-11

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