1

A Digital Demodulator for PSK Signals

Year:
1973
Language:
english
File:
PDF, 730 KB
english, 1973
3

In vitro propagation of several Betula species representing various ploidy levels

Year:
1989
Language:
english
File:
PDF, 190 KB
english, 1989
9

Micropropagation of a mature colchicine-polyploid and irradiation-mutant of Betula pendula Roth

Year:
1988
Language:
english
File:
PDF, 717 KB
english, 1988