Pottasch, Stuart R Planetary nebulae: A study of late stages of stellar evolution /D. Reidel Publishing - Dordrecht: D. Reidel Publishing Company, 1984 - xv, 322p. - International astronomical union . Vol. 107 Subjects--Topical Terms: Cosmoses Subjects--Index Terms: Universe Universal Decimal Class. No.: 524.37 / M4