00313nam a2200097Ia 450000500170000000800410001702000150005810000210007324500960009426000250019020260205043028.0260111s9999||||xx |||||||||||||| ||und||  a0720703859  aBarker, L. Mary. 0aPears cyclopaedia 1971-72 : a book of background information and reference for everyday use  aLondonbPelhamc1975