Information processing. 9-track, 12,7 mm (0,5 in) wide magnetic tape for information interchange using phase encoding at 126 ftpmm (3200 ftpi) - 63 cpmm (1600 cpi)— 20 стр.
Water quality -- Determination of the growth inhibition effects of waste waters, natural waters and chemicals on the duckweed Spirodela polyrhiza -- Method using a stock culture independent microbiotest— 28 стр.
