Daigdig na kristal [microform]. - Arceo, Liwayway A. 1924- (Quezon City Photoduplication Service, University of the Philippines Library, 1976)
Nalathala sa Liwayway, Mayo 15-Okt. 9, 1967.
Letter of the author to N. Prado attached to flyleaf.
Microfilmed with 23 other titles.
Originally published in Manila, 1967.