RT @AndrewM_Webb: To count an animal population if you can't catch them all: capture some, mark them, release, and capture again. The ratio… 0 atbildes
Jānis Jansons (2020-01-02 14:21:26) |
RT @AndrewM_Webb: To count an animal population if you can't catch them all: capture some, mark them, release, and capture again. The ratio… |