BIRHMAN, R. K., T. A. JOSEPH, H. C. SHARMA, S. K. BHATTACHARYYA, and H. S. CHAUHAN. “GENERAL COMBINING ABILITY FOR FIELD RESISTANCE TO LATE BLIGHT IN POTATO”. INDIAN JOURNAL OF GENETICS AND PLANT BREEDING, vol. 52, no. 04, Nov. 1992, pp. 401-6, doi:.