Analisis pengaruh rasio market to book, tangibilitas, profitabilitas, dan ukuran perusahaan terhadap struktur modal, pada 186 perusahaan yang sahamnya terdaftar di bursa efek Indonesia periode 2012-2018 = Analysis on effect of market to book ratio, tangibility, profitability, and size to capital structure on 186 companies listed on Indonesia stock exchange in period of 2012 -2018