The PIE User's Manual

(1)

The complete list appears when you type ? in Gopher.

(2)

John R. Levine and Carol Baroudi, The Internet for Dummies (Boston: IDG Books Worldwide, Inc., 1993) pp. 67-68.

(3)

John R. Levine and Carol Baroudi, The Internet for Dummies (Boston: IDG Books Worldwide, Inc., 1993) pp. 67-68.