Octaviano, L. P. (1977). Maintenance and preservation of viable sexually-reproducing yeast cells for high school and college biology laboratory classes [microform]. Photoduplication Service. University of the Philippines Library.

Octaviano, Lorena P. Maintenance and Preservation of Viable Sexually-reproducing Yeast Cells for High School and College Biology Laboratory Classes [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.

Octaviano, Lorena P. Maintenance and Preservation of Viable Sexually-reproducing Yeast Cells for High School and College Biology Laboratory Classes [microform]. Photoduplication Service. University of the Philippines Library, 1977.