WHO study of dental caries etiology in Papua New Guinea
Treść karty:195,993 SCHAMSCHULA R.G. /współaut./ WHO study of dental caries etiology in Papua New Guinea.R. G. Schamschula, /et al./ Geneva 1978 World Health Organization, 4° s. nlb. 2, 199, il. /res.] WHO Offset Publication no. 40.