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Fig. 1
NVSS (left column) and FIRST (right column) images of three quasars with asymmetric lobes. Contours are increased by a factor of 2; the first contour level corresponds to 1 mJy/beam for NVSS images and 0.5 mJy/beam for FIRST images. Crosses indicate the positions of optical objects.
This figure is made of several images, please see below:
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