Campbell, Douglas Houghton, 1859-1953
Elements of Structural and Systematic Botany : For High Schools and Elementary College Courses [recurso electrónico] / Douglas Houghton Campbell - Project Gutenberg, 2007 - Project Gutenberg 20390 .
Public domain in the USA.
Text
Botany -- Textbooks
QK
Elements of Structural and Systematic Botany : For High Schools and Elementary College Courses [recurso electrónico] / Douglas Houghton Campbell - Project Gutenberg, 2007 - Project Gutenberg 20390 .
Public domain in the USA.
Text
Botany -- Textbooks
QK