Trees are important. Do you know what parts make up a tree?
ដើមឈើមានសារៈសំខាន់។ តើអ្នកដឹងថាផ្នែកអ្វីខ្លះបង្កើតជាដើមឈើ?
Your purchase of this book supports Library For All in its mission to make knowledge available to all, equally.