A field with pink flowers on the background of snow-capped mountainsA field with pink flowers on the background of snow-capped mountains
On the table is a magnifying glass with a manuscript, a compass and a ropeOn the table is a magnifying glass with a manuscript, a compass and a rope
Seashells , a star on the sand on the shore and a seagull in the skySeashells , a star on the sand on the shore and a seagull in the sky
Lecture with formulas on the blackboard in front of studentsLecture with formulas on the blackboard in front of students