5 1 50 Ziyad Marar Primary Author Serpil Çağlayan Translator mixed material 9789758704637 İstanbul Kitap 2003 mutluluk_paradoksu.jpg.jpg A. Azmi Yetim Primary Author mixed material 975284376 İstanbul Morpa Kültür 2005 cover_sosyoloji_ve_spor.jpg Yusuf Çağlayan Primary Author mixed material 9786050824490 İstanbul Timaş 2017 Sosyolojik_Sava%C5%9F.jpg.jpg Ziya Gökalp Primary Author mixed material 9789754452914 İstanbul Kadro 1976 t%C3%BCrk%C3%A7%C3%BCl%C3%BC%C4%9F%C3%BCn_esaslar%C4%B1.jpg.jpg Gustave Le Bon Primary Author Selahattin Demirkan Translator mixed material 9789755702452 İstanbul Yağmur 1976 kitleler_psikolojisi.jpg.jpg