http://archive.lib.msu.edu/tic/monos/seeding.pdf | 02/15/2019 | PDF Reader | | |
http://hdl.handle.net/2027/nyp.33433066624440 | 02/19/2019 | JavaScript | Possibly USA access only | |
http://biodiversitylibrary.org/page/37575654 | 02/15/2019 | JavaScript | | |
http://archive.org/details/seedingandcareg00ogoog | 02/15/2019 | JavaScript | | |
http://archive.org/details/cu31924014464683 | 02/15/2019 | JavaScript | | |
https://books.google.com/books?id=4ocCAAAAYAAJ&pri[...] | 02/15/2019 | | | |