000 00246 a2200109 4500
082 _a614.06
_bW89t
245 1 _aTECHNICAL REPORT SERIES
260 _a
_b
_c
440 _aWorld Health Organization
_vNo. 291
964 _gCIRC
997 _a33412 s C
999 _c453839
_d453839