Soil and foliar zinc application techniques influence the productivity, zinc concentration, and protein content in the grains of bread wheat varieties oleh Mahbubur Rahman Khan, Md. Shamim Akram, Jannatul Ferdous Moonmoon, Md. Mahbubul Alam Tarafder, Md. Habibur Rahman, Shilpi Das, Jitka Skalicka, Milan Skalicky, Akbar Hossain