Бескин Н. М. Вопросы тригонометрии и ее преподавания. — 1950
{"root":"text","url":"beskin_voprosy_trigonometrii_i_ee_prepodavaniya_1950","surl-package":"\/text\/%PACKAGE%\/?query=%QUERY%","surl-page":"\/text\/%PACKAGE%\/p%PAGE%\/?query=%QUERY%","query":"\"\"","section":"library","mode-gfx":true,"mode-html":true,"mode-prefer":"gfx","layout-prefer":"1x1","zoom":{"1x1":{"level":100,"_w":false,"_h":true},"2x1":{"level":100,"_w":true,"_h":false},"html":{"level":100}},"textsize-prefer":"2","textfont-prefer":"a","tree-type":"ajax","tree-state":"visible","printbox-state":"hidden","print-allowed":"1","searchbox-state":"hidden","searchbox-type":"inline","goto-pageno":null,"goto-page":"3","defw":"1000","defh":"1578","minh":1578,"maxh":1578,"fixeven":null,"package":"left","sitemode":"live","user":{"uuid":""}}
