Maekawa M., Daniel, et al. “COMPARISON OF SINGLE STAGE VS MULTI STAGE INCUBATION SYSTEMS ON PERFORMANCE OF HATCHING EGGS OF BROILER BREEDERS OF THREE AGES”. Revista De Investigaciones Veterinarias Del Perú, vol. 25, no. 4, Dec. 2014, pp. 494-03, https://doi.org/10.15381/rivep.v25i4.10800.