How to manage optimally and make use of the resource will play an important role in sustained-yield forest management in Heilongjiang province and determining the age of harvest cutting is the key.

如何合理地经营利用好这部分资源，对该省森林永续经营利用起到重要作用，其主伐年龄的确定是关键问题。

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First, national forests in America operate under a sustained-yield multiple-use mandate.

ECONOMIST: Letters

While on a day-to-day level, companies need to resolve disputes and move on, a more long-term and sustained focus could yield longer-term payoffs.

FORBES: Turn The Tables On Patent Trolls

The Center for Security Policy believes that, in light of the latest, powerful evidence of Mikhail Gorbachev's desire to preserve the power of the traditional central authorities in the USSR and his willingness to yield on this score only in the face of sustained pressure, it would be a grievous mistake for the West to come to his rescue.

CENTERFORSECURITYPOLICY: Center For Security Policy