00481nam a2200157Ia 450000500170000000800460001703700290006304000200009204100130011208400240012510000190014924500840016824500530025226000090030530000090031420250508153453.0008  250505s9999    xx            000 0 eng d  aBooks to be hide in OPAC  aFEDLbengcFEDL  aeng2eng  a373.19, UNI/OqFEDL  aBrows Willis C 0aExtraclass activities in aviation photography radio for secondary school pupils 0cU S Department of health, Education, and Welfare  c1956  a48p.