Protecting life on earth : steps to save the ozone layer /
Shea, Cynthia Pollock.
Protecting life on earth : steps to save the ozone layer / Cyn thia Pollock Shea. - Washington, D. C. : World Watch Institute , 1988. - 46 p. : ill. ; 22 cm. - World Watch Paper ; no.87, December 1988. .
Includes bibliographical references.
0916468887
Environmental protection.
Ozone layer.
Protecting life on earth : steps to save the ozone layer / Cyn thia Pollock Shea. - Washington, D. C. : World Watch Institute , 1988. - 46 p. : ill. ; 22 cm. - World Watch Paper ; no.87, December 1988. .
Includes bibliographical references.
0916468887
Environmental protection.
Ozone layer.