00912nam0-22003131i-450-990001052880403321000105288FED01000105288(Aleph)000105288FED01000105288--------d--------km-y0itay50------baeng<<The >>Nature of Cometsby Nikolaus B. Richtertranslated and revised edition by Arthur Beerwith an introduction and additional contributions by R.A. LyttletonLondonMethuen1963AstronomiaAstrofisicaCosmologia520523Richter,Nikolaus B.50174Beer,ArthurLyttleton,R.A.ITUNINARICAUNIMARCBK99000105288040332119-0553232FI1FI1Nature of Comets340672UNINA