IMG-20180503-WA0033.jpg Observing microorganism at  our doorstepThumbnailsInaugration of the summer campObserving microorganism at  our doorstepThumbnailsInaugration of the summer campObserving microorganism at  our doorstepThumbnailsInaugration of the summer campObserving microorganism at  our doorstepThumbnailsInaugration of the summer campObserving microorganism at  our doorstepThumbnailsInaugration of the summer campObserving microorganism at  our doorstepThumbnailsInaugration of the summer camp

Exploring the unit, Components of wood-ash