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From: c28f62@TheWorld.com (Mark Kramer)
Newsgroups: sci.image.processing
Subject: Re: SOLUTIONS MANUAL: Discrete-Time Signal Processing 3rd ed by Oppenheim, Schafer
Date: Fri, 22 Sep 2017 08:04:18 +0000 (UTC)
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In article <45594755-5afe-450e-8ae6-f8cf9046ea22@googlegroups.com>,
 <huoxingshaonv@gmail.com> wrote:
>I need the solutions manual for 3rd edition DISCRETE TIME SIGNAL
>PROCESSING BY OPPENHEIM. My email address is huoxingshaonv@gmail.com.
>Thank you so much!

Then find a fucking bookstore and buy it. This isn't an online bookstore.
It's a USENET discussion group.