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035 _a538
041 _aENG
082 _a616.986
100 _aWorld Health Organization
245 0 _aFirst International syposium on Yaws control (World health organization monograph series No.15)
_bpremier symposium international sur la lutte contre le pian
260 _aGeneva
_bWorld Health Organization
_c1953
300 _a418
505 _aReference - Directory (Chemistry)
650 _aWHO
_bPathology -- Internal medicine
942 _cBK
999 _c538
_d538