"The Age of Maize Cultivation in Asia : (a Review of Hypotheses and New Ethnographical, Linguistic and Historical Data)" : "Folia Orientalia", t. 4: 1963, s. 244-295; "The Age o Maize Cultivation in Asia : (Further Investigations)" : "Folia Orientalia", t. 10: 1969, s. 91-191, 1 mapa, Tomasz Marszewski : [recenzja]