- en-academic.com dic.nsf/enwiki/11873795The PT-91 Twardy ("hard","tough" or "resilient") is a Polish main battle tank. It is a development of the T-72M1 and first entered service in 1995.
- commons.wikimedia.org wiki/PT-91_TwardyEnglish: The PT-91 Twardy ("PT-91 Hard") is a Polish main battle tank. It is a very extensive modernization of the T-72M1, which entered service in 1995.
- itc.ua articles/polskye-tanky-pt-91-twardy-…
- turkcebilgi.com pt-91_twardyKısaca: PT-91 Twardy Polonya yapımı ana muharabe tankıdır. T-72M/M1 tankının geliştirilmesiyle ortaya çıkmıştır. T-72'nin geliştirilmiş varyantıdır.
- web.archive.org web/20131107212614/http://www.…These are operated in conjunction with the OBRA laser warning system. The PT-91 Twardy has new gun stabilization system and new fire control system.
- vistapointe.net pt-91-twardy.htmlIn compilation for wallpaper for PT-91 Twardy, we have 25 images. We determined that these pictures can also depict a Military, PT-91 Twardy, Tank.
- stlfinder.com 3dmodels/pt-91-twardy-model/It’s created accurately, in real units of measurement, qualitatively and maximally close to the original. PT-91 Twardy 3D model cgtrader.
- steamcommunity.com sharedfiles/filedetails/…The PT-91 Twardy (Polish pronunciation: [ˈtfar.dɨ], English: Hard) is a Polish main battle tank. A development of the T-72M1, it entered service in 1995.
- globaldefensecorp.com 2022/09/05/ukraine-receives…Poland handed over PT-91 Twardy main battle tanks to Ukraine. This is yet another batch of military assistance to counter Russia’s aggression.