Louw Feenstra (1940-) R.O. Fock. De creatieve factor : opstellen over creativiteit.
Readman, Jo . The world came to my place today.
A. Steffen. Lin, drama.
T. Roszak. Mensch und Erde auf dem Weg zur Einheit.
Vasu, Srisa Chandra rai bahadur (ed.) The Siva Samhita
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