我有篇論文最近被《化學(xué)進(jìn)展》快接收了，但是我有張圖片引用PNAS的，要如何獲得圖片版權(quán)呢？
按照PNAS網(wǎng)站上說明的（如下），我也發(fā)email給PNAS了，但是始終沒有得到回復(fù)！請問如何處理呢？


Requesting Permission
For permission to reuse material in volumes 90–present (1993–present) that published under the exclusive PNAS License to Publish, requests should be sent to PNASpermissions@nas.edu  and must include the following information about the requestor and the material:

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