Children's Picture Books Bestseller List for April 18, 2002 from sales the week ending April 14 For the Book Sense store nearest you, call 1-888-BOOKSENSE or visit www.booksense.com   CHILDREN'S PICTURE BOOKS   1. Goodnight Moon Margaret Wise Brown, Clement Hurd (Illus.), 0694003611, HarperCollins, $7.95.   2. Pat the Bunny Dorothy Kunhardt, 0307120007, Golden, $7.99.   3. Olivia Ian Falconer, 0689829531, Atheneum, $16.   4. The Three Pigs David Wiesner, 0618007016, Clarion Books, $16.   5. Brown Bear, Brown Bear, What Do You See? Bill Martin, Eric Carle (Illus.), 0805047905, Holt, $6.95.   6. Good Night, Gorilla Peggy Rathmann, 0399230033, Putnam, $7.99.   7. On the Day You Were Born Debra Frasier, 0152579958, Harcourt, $16.   8. Guess How Much I Love You? Sam McBratney, Anita Jeram (Illus.), 076360013X, Candlewick, $6.99.   9. Click, Clack, Moo Betsy Lewin, Doreen Cronin (Illus.), 0689832133, S&S, $15.   10. Olivia Saves the Circus Ian Falconer, 068982954X, Atheneum, $16.   11. Daisy Comes Home Jan Brett, 039923618X, Putnam, $16.99.   12. Peter Pan: Return to Never Land 0736413065, Disney Books for Young Readers, $3.25.   13. Runaway Bunny Margaret Wise Brown, Clement Hurd (Illus.), 0061074292, Harpercollins Juvenile Books, $7.95.   14. Dora's Backpack Sarah Willson, Robert Roper (Illus.), 0689847203, Simon Spotlight, $3.50.   15. Goodnight Moon Margaret Wise Brown, 0064430170, HarperCollins, $5.95.   The Book Sense Bestseller List is copyrighted and cannot be reprinted without permission from the American Booksellers Association. For information, please contact Sascha Alper, Book Sense Projects Manager, at: (914) 591-2665 ext. 1202, 828 South Broadway, Tarrytown NY. Reprint Guidelines.