Suriya Sarnkhuankaew. 1992. Response of three varieties of flue-cured tobacco (Nicotiana tabacum L.) to varying rates of nitrogen fertilizer and irrigation frequencies in northern Thailand. Graduate Studies, Central Luzon State University;

Suriya Sarnkhuankaew. Response of three varieties of flue-cured tobacco (Nicotiana tabacum L.) to varying rates of nitrogen fertilizer and irrigation frequencies in northern Thailand. . Munoz, Nueva Ecija:Central Luzon State University, 1992.

Suriya Sarnkhuankaew. (1992) Response of three varieties of flue-cured tobacco (Nicotiana tabacum L.) to varying rates of nitrogen fertilizer and irrigation frequencies in northern Thailand . Central Luzon State University/Munoz, Nueva Ecija.