+ развернуть текст   сохранённая копия

Тэги: landscapes, mineral, rock, stone

3d model of Botryoidal Chalcedony with Druzy Quartz Crystal by 3d_molier

   2014-08-27 20:28:00
... rock stone nature mineral cryptocrystalline silica vray ...
+ развернуть текст   сохранённая копия

Тэги: crystal, landscapes, mineral

Vitamin B12 deficiency symptoms

   2013-04-10 15:46:38
Vitamin B12 deficiency usually occurs for one of two reasons: insufficient intake of this vitamin ...
+ развернуть текст   сохранённая копия

Тэги: mineral, vitamin

Vitamin C may reduce the negative effects of air pollution

   2013-01-30 07:10:48
Scientists have found another reason to eat more fruits and vegetables: a diet rich in them can ...
+ развернуть текст   сохранённая копия

Тэги: mineral, vitamin