Gupta, C. P., & Gupta, C. P. (2002). Seasonal performance of three elite Hevea - rubber clones in a less favourably suited edaphic and climatic conditions of Orissa. Director of Research, Central Coffee Research Institute.

Gupta, Chandra P., und Chandra P. Gupta. Seasonal Performance of Three Elite Hevea - Rubber Clones in a Less Favourably Suited Edaphic and Climatic Conditions of Orissa. Director of Research, Central Coffee Research Institute, 2002.

Gupta, Chandra P., und Chandra P. Gupta. Seasonal Performance of Three Elite Hevea - Rubber Clones in a Less Favourably Suited Edaphic and Climatic Conditions of Orissa. Director of Research, Central Coffee Research Institute, 2002.