Question on measuring contours

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From: malcolm at cast.uark.edu (Malcolm Williamson)
Newsgroups: info.grass.user
Subject: Re: Question on measuring contours
Date: Mon, 11 Aug 1997 15:19:40 -0000 12:00:00 +0000 (GMT)
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On Sun, 10 Aug 1997, Filippidis Vangelis wrote:

> Dear Sirs,
> 
> I am a new GRASS user using GRASS 4.1.5 running on Linux (2.0.29). 
> I have digitized all contour lines from 1:50000 topographic map,
> and i want to caclulate the total length of them in Km. 
> Can you help me ?
> 
> Thank you in advance