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Polypropylene research trays for field work and general use.
These economical sieves are made of stainless steel mesh with steel frames.
HI9810302 GroLine Soil pH Tester designed to bring simplicity to pH testing of soil.
Stones, clods, roots and plant remains can be removed with a soil sieve.
Using the the NATIONAL GEOGRAPHIC metal detector children can explore the world and their surroundings in a playful way.
Velleman Metal Detector with a search depth of 12cm. This metal detector has a 16 cm search coil and an analog meter.
Velleman Metal Detector Basic model with a search depth of 12cm. This metal detector has a 16,5 cm search coil and an analog meter.
Measure turbidity in streams where a Secchi disk cannot be used
With this handy magnifying glass you can identify all kinds of flora and fauna during walks. Also nice for children in the garden.
These Wash bottles of LDPE are round and are graduated.
With this insect observation box, insects can easily be viewed from different sides.
Children can easily view nature up close through these binoculars made from FSC® wood. For example, with these durable binoculars, children can watch birds feed their young from a distance.
Velleman CS250 Metal Detector with a search depth of 22 cm. This metal detector has a 24 cm search coil and a LCD display.
The Secchi Disk allows quick determination of turbidity or degree of underwater visibility in natural water supplies.
All entries fully reviewed and updated to reflect the latest in scientific research, now totalling over 5,600 entries.
Wind farms are an essential component of global renewable energy policy and the action to limit the effects of climate change.
This Very Short Introduction to the concept of biodiversity and the basic biological processes it involves and eventually its conservation.
Wind farms are an essential component of global renewable energy policy and the action to limit the effects of climate change.
Measure the amount of precipitation with this compact rain gauge.
Contains more than 3,000 entries covering all aspects of physical and human geography.
20 pieces, made of transparent polystyrene, with ventilation cams.
101 Curious Tales of East African Birds is an accessible introduction to important topics in modern ornithology, packed with stunning photographs of East African birds.
Ecologie en verplaatsingspatroon van zowel volwassen ijsvogels als van uitvliegende nestjongen.
Camera trapping is a powerful and now widely used tool in scientific research on wildlife ecology and management.