A.These are used for a variety of purposes
B.They are invaluable for determining the productive capacity of forest areas
C.For predicting the future yield of existing crops and as an aid to thinning
D.All of the above
A.These are used for a variety of purposes
B.They are invaluable for determining the productive capacity of forest areas
C.For predicting the future yield of existing crops and as an aid to thinning
D.All of the above