[1]
Udomprasert, P., Urairong, K., Sakpuaram, T. and Wajjwalku, W. 1999. Influence of the Wean-to-first-service Interval on the Subsequent Farrowing Rate and Litter Size of Sows in Thailand. Agriculture and Natural Resources. 33, 1 (Mar. 1999), 33–42.