A key opening the way to every capacity.

Eitemau Tebyg

• The rise and progress of the people called Quakers
  gan: Penn, William, 1644-1718
  Cyhoeddwyd: (1855)
• A key to the portal of the Mystic Way
  Cyhoeddwyd: (1933)
• A brief examination and state of liberty spiritual, both with respect to persons in their private capacity, and in their church society and communion
  gan: Penn, William, 1644-1718
  Cyhoeddwyd: (1771)
• On the capacity region for deterministic two-way channels and write-unidirectional memories
  gan: Overveld, Wilhelmina Maria Cornelia Johanna van, 1962-
  Cyhoeddwyd: (1991)
• A brief account of the rise and progress of the people called Quakers, in which their fundamental principle, doctrines, worship, ministry and discipline are plainly declared, to prevent the mistakes and perversions that ignorance and prejudice may make to abuse the credulous. With a summary relation of the former dispensations of God in the world, by way of introduction
  gan: Penn, William, 1644-1718
  Cyhoeddwyd: (1695)