PHELPS' OPERATION

\fˈɛlps ˌɒpəɹˈe͡ɪʃən], \fˈɛlps ˌɒpəɹˈe‍ɪʃən], \f_ˈɛ_l_p_s ˌɒ_p_ə_ɹ_ˈeɪ_ʃ_ə_n]\

Definitions of PHELPS' OPERATION