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what does colour of book mean.
#1
Hi, I'm new in Railway signaling field study. I started recently. Going through different posts on this forum I found this concept of yellow, blue, brown etc. book. My question as a newbie is what these colour coding mean in railway.
Atif from Saudi Arabia
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Messages In This Thread
what does colour of book mean. - by AtifAman - 01-08-2019, 07:52 PM
RE: what does colour of book mean. - by Peter - 01-08-2019, 10:05 PM

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