sFH-18 Family in detail : WWII German sFH-18 and sFH-36 15 cm field howitzers and his variants in World Military Museums Collections : photo manual for modelers / [František Kořán, Jan Horák, Petr Doležal ; translate Jiří Bumbálek] .  Prague :  RAK,  c2008 .  71 s.   [1, z toho volných 1]