Translations on Communist China's science and technology, nos. 256-275: JPRS 33226, 33238, 33254, 33257, 33311, 33323, 33356, 313362, 33419, 33426, 33433, 33436, 33442, 33456, 33486, 33512, 33554, 33566, 33605, 33661.