I'm searching for a source of data on German equipment losses on the Eastern Front broken down by years. To be specific, weapons other than tanks and warplanes i.e. guns, mortars and artillery pieces. Is there a work on the Wehrmacht side of the hill comparable to Krivosheev's study on RKKA losses? I'm aware of existence of Waffen und Geheimwaffen des Deutschen Heeres by Fritz Hahn, but as far as I'm informed - this book covers overall losses for specific type of weaponry on every Theater of Operations, if covers at all. I would be grateful for any help!