Zabalgogeazcoa, Inigo. (1992). Physico-chemical properties, transmission, and origin of a double-stranded ribonucleic acid in barley cultivars. Doctoral thesis.

Zambito-Leo, Leonardo. (1978). The Effect of periods of light exposure on the production of Isoflavonoids in soybean leaves infiltrated with Drwinia amylovora and water. Master's thesis.

Zang, Larry Edmund. (1984). Spore release and apothecial development in Naemacyclus minor Butin. Master's thesis.

Zeiders, Kenneth Eugene. (1958). Studies on internal bark necrosis of red delicious apple trees. Master's thesis.

Zhang, Ruofang. (2004). Genetic characterization and mapping of partial resistance to early blight in Diploid potato. Doctoral thesis.