Environmental Problems | Lviv Polytechnic National University

Electrical engineering & Electromechanics | National Technical University "Kharkiv Polytechnic Institute"

St. Petersburg Polytechnical University Journal: Physics and Mathematics | Peter the Great St.Petersburg Polytechnic University

Resource-Efficient Technologies | Tomsk Polytechnic University

Perm Journal of Petroleum and Mining Engineering | Perm National Research Polytechnic University

Ukrainian Journal of Veterinary and Agricultural Sciences | Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv

Kurdistan Journal of Applied Research | Sulaimani Polytechnic University

Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University

Lemberg, Lwów, L'viv, 1914‒1947
di: Mick

Magazine of Civil Engineering | Peter the Great St. Petersburg Polytechnic University

Sustainable Development and Engineering Economics | Peter the Great St. Petersburg Polytechnic University

Bulletin of the Polytechnic Institute of Jassy: Constructions, Architechture Section | Sciendo

Mechanics and Advanced Technologies | Igor Sikorsky Kyiv Polytechnic Institute

Innovative Biosystems and Bioengineering | Igor Sikorsky Kyiv Polytechnic Institute

KPI Science News | Igor Sikorsky Kyiv Polytechnic Institute

Transport Problems | Silesian University of Technology

Journal of Education, Management and Development Studies | Camarines Sur Polytechnic Colleges

Machinery & Energetics | National University of Life and Environmental Sciences of Ukraine

The Problem South
di: Ring

The Problem of Evil
di: Peterson

Embodying the Problem
di: Vinson

The Problem with Pilots
di: Schultz

Weighty Problems
di: Backstrom

Problems of the War

Social Problems

Social Problems

Inverse Problems

Image Problems
di: DeCaroli

The Water Problem
di: Mulroy

Everybody's Problem
di: Hawkins

The Boy Problem
di: Grant

Soziale Probleme

Problems of Economics

The problems of philosophy.
di: Russell, Bertrand
Pubblicazione: (1912)

X-The Problem of the Negro as a Problem for Thought
di: Chandler

Dental and Medical Problems | Wroclaw Medical University

JIP (Jurnal Informatika Polinema) | UPT P2M State Polytechnic of Malang