Beschrijving
Attack and Defense – Akira Ishida and James Davies. Elementary Go Series. Vol. 5. Diagrams. Tokyo, The Ishi Press. Third printing, 1989.
Rijnsburgse Boys 50 jaar Attack and Defense – Akira Ishida and James Davies. Elementary Go Series. Vol. 5. Diagrams. Tokyo, The Ishi Press. Third printing, 1989.
Rijnsburgse Boys 50 jaar