publisher: Jove publish date: February 1st 1986
format: paperback
language: English
ISBN:
0515087688 (9780515087680)
language: English
ISBN:
0515062251 (9780515062250)
publisher: Penguin publish date: June 1st 1985
format: mass market paperback
language: English
ISBN:
051508218X (9780515082180)