Discovered on a recent visit to Lisbon and offered for sale here is a hardback copy of Navios Da China/Ships of China by Valentin Sokoloff.
Issued in Macau, it's a gem of a book and a rare reference source for the junk-rig sailor.
Currently listed on Amazon at over £450, I've listed my copy on ebay, starting at £99. Any questions, please ring 07510978685.
To see the full listing visit: https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F264189871946