合理利用阳光和地表・地下土地资源
Di 1 ban.
Our rough guess is there are 33,250 words in this book.
At a pace averaging 250 words per minute, this book will take 2 hours and 13 minutes to read. With a half hour per day, this will take 5 days to read.
How long will it take you?
This book will take an estimated to read at a reading speed averaging words per minute. With 30 minutes per day, this will take to read.
Enter your reading speedYou can take one of our WPM reading speed tests to find your reading speed.
Create a free account to track your reading progress, build your reading list, and set reading goals.
Word Count
33,250 words, Guess
Page Count
133 pages
Identifiers
- Open LibraryOL62404903M
- OCLC Control Number39139554
Alternate Titles
- He li li yong yang guang he di biao, di xia tu di zi yuan
Subjects
Reader Reviews
No reviews yet for this book.
Be the first to share your thoughts!