This Transistor Radio Manual was first published in 1972 by "Shanghai Scientific Technology Publisher", Shanghai. In April 1981 there was a second edition (the first new one). There was also a second print of this 2nd ed. in Aug. 1983. Here we use this 2nd print - with about 140 to 163 models - as reference to pages etc., not the first print of 1972 - and call it "Manual 01". We have the 1972 manual in electronic form and it seems to have no differences - anyway in respect of models listed (on the same pages).