Dordrecht, Reidel, 1971 . xix, 470 p. with illus. , "Symposium no. 46 held at Jodrell Bank, England, August 5-7, 1970." | The meeting on August 5 was on the University of Manchester campus and the meeting on August 6 and 7 was at the Nuffield Radio Astronomy Laboratories, Jodrell Bank. | Sponsored by the International Astronomical Union. 25 cm.. 9027701830

Place Hold on The Crab Nebula.