The study of the physics of cometary nuclei
Subtitle: semiannual progress report no. 19, 1 October 1983 through March 31, 1984
By: principal investigator, Fred L. Whipple ; prepared for National Aeronautics and Space Administration.
Contributors: United States. National Aeronautics and Space Administration.
Series: NASA-CR -- 173519.; NASA contractor report -- NASA CR-173519.
Publisher: The Administration
Published: 1984
Place of publication: Washington, D.C
Language: eng
Format: Microform
Subjects: Comets.
Notes: Microfiche. [Washington, D.C. : National Aeronautics and Space Administration, 1984]. 1 microfiche ; 11 x 15 cm.

"May 1984."

"Grant NSG-7082."

"N84-23543"--Microfiche header.

Includes bibliographies.