TY - `THES` AU - Al-Ghamdi, Mohammed H. TI - Etiological and epidemiological differential studies in oral cancer between the societies of Germany and the kingdom of Saudi Arabia PY - 1997 LA - eng SP - 83 Bl. N1 - Nicht für den Austausch PB - Heidelberg, Univ., Diss., 1997 CN - 97 U 449 AN - UBHD-9716397 ER -