Narain Prem, Do we need to keep Increasing Crop Productivity for all Times to Come?, Journal of Agronomy Research, Volume 2, Issue 3, 2020, Pages 42-45, ISSN 2639-3166, https://doi.org/10.14302/issn.2639-3166.jar-20-3165.
(https://jcci-clinicalarticles.infojar/article/1245)
Keywords: Vertical dimension; Crop productivity; Per Capita availability of food.