pngtree-anatomical-human-lungs-illustration-with-colorful-bronchial-tree-png-image_15827460.png

pngtree-anatomical-human-lungs-illustration-with-colorful-bronchial-tree-png-image_15827460.png

Grid: 50 × 50

Gauge: Custom — 17 sts × 18 rows / 4 in