12
15
16
18
.
Ptolemy
Strabo
Ratzel
Humboldt
Varuna -Irrigated or unirrigated condition
Vardan -Unirrigated condition
Narendra-85 -Saline soil
K-88 -Black grain
Assam Himalayas
Kumaon Himalayas
Nepal Himalayas
Punjab Himalayas
Verkhoyansk
Nr. Vostok
Ust’ Shchugor
Snag