photostat paper photoswitch photosynthesis photosynthetic phototechnical film phototelegram phototelegraphy phototopography phototransistor phototube phototype phototypesetting phototypesetting machine photovalve photovaristor photovisual magnitude photovoltaic photovoltaic cell photovoltaic effect photozincography |
photostat paper фотостатна хартия Търсената дума е намерена |